No quiero llegar agobiada a la entrevista, así que saldré con tiempo.

Because agobiada agrees with the speaker, which is an implied yo. If the speaker is female, she says agobiada. A male speaker would say agobiado.

So:

• No quiero llegar agobiada... = said by a woman
• No quiero llegar agobiado... = said by a man

In Spanish, adjectives usually match the person they describe in gender and number.

Here, agobiada means something like stressed, overwhelmed, flustered, or rushed.

It does not necessarily mean just emotionally upset. In this context, it suggests the speaker does not want to arrive at the interview in a state of pressure or mental overload, probably because of being short on time.

So llegar agobiada is very natural for arrive feeling stressed / rushed / overwhelmed.

Yes. In Spanish, some verbs can be followed by an adjective that describes the subject’s state when the action happens.

So llegar agobiada literally means to arrive stressed/overwhelmed.

This is similar to structures like:

• Llegó cansado = He arrived tired
• Salió contenta = She left happy
• Volvieron enfadados = They came back angry

The adjective describes how the person is at the moment of arriving.

Because the verb llegar normally uses a before the destination:

• llegar a casa
• llegar al trabajo
• llegar a la entrevista

So a la entrevista means to the interview.

Even though an interview is an event rather than just a physical place, Spanish still uses llegar a.

Not in this sentence.

With llegar, Spanish normally uses a for the destination:

• llegar a la entrevista = arrive at the interview

Para la entrevista would suggest for the interview, which expresses purpose, not destination.

For example:

• Me estoy preparando para la entrevista = I’m getting ready for the interview

So here, a la entrevista is the correct choice.

Because after querer meaning to want, Spanish usually uses an infinitive when the subject stays the same.

• Quiero salir = I want to leave
• No quiero llegar tarde = I don’t want to arrive late
• No quiero llegar agobiada = I don’t want to arrive stressed

This is very common in Spanish.

If the subject changes, Spanish often uses que + subjunctive instead:

• Quiero que vengas = I want you to come

But here the same person both doesn’t want and arrives, so the infinitive is used.

Así que means so, therefore, or as a result.

It introduces the consequence of what came before:

• No quiero llegar agobiada a la entrevista, así que saldré con tiempo.
• I don’t want to arrive stressed at the interview, so I’ll leave with plenty of time.

It is a very common connector in everyday Spanish.

No.

• porque gives the reason: because
• así que gives the result/consequence: so

Compare:

• Saldré con tiempo porque no quiero llegar agobiada.
  = I’ll leave early because I don’t want to arrive stressed.

• No quiero llegar agobiada, así que saldré con tiempo.
  = I don’t want to arrive stressed, so I’ll leave early.

They are closely related in meaning, but they organize the logic differently.

Yes, voy a salir con tiempo would also work.

• saldré = I will leave
• voy a salir = I’m going to leave

In this sentence, saldré sounds natural and straightforward. It expresses a decision or plan.

In everyday Spanish, especially in conversation, ir a + infinitive is very common for near-future plans. But the simple future is also perfectly normal here.

So both are possible:

• Así que saldré con tiempo
• Así que voy a salir con tiempo

Con tiempo means with enough time, with time to spare, or early enough.

So saldré con tiempo does not literally mean just I’ll leave with time in English. It means:

• I’ll leave in plenty of time
• I’ll leave early enough
• I’ll give myself enough time before leaving

It suggests planning ahead so as not to be rushed.

Because pronto and con tiempo are similar, but not identical.

• pronto = early / soon
• con tiempo = with enough time to spare

Saldré pronto only says the speaker will leave early. Saldré con tiempo emphasizes that the speaker will allow enough time to avoid stress or delays.

So con tiempo fits especially well with the idea of not arriving agobiada.

The infinitive is salir, meaning to leave / to go out.

Saldré is the first person singular simple future form:

• yo saldré = I will leave

This verb is irregular in the future tense because it uses the stem saldr-:

• saldré
• saldrás
• saldrá
• saldremos
• saldréis
• saldrán

Because así que connects two related clauses, and in writing it is very common to place a comma before it:

• No quiero llegar agobiada a la entrevista, así que saldré con tiempo.

The comma helps show the pause between the first idea and its consequence.

In short:

• first clause: No quiero llegar agobiada a la entrevista
• second clause: así que saldré con tiempo

This punctuation is standard and natural.

Yes, but it is normally omitted because the verb forms already show the subject:

• No quiero...
• saldré...

Both clearly indicate yo.

You could say:

• Yo no quiero llegar agobiada a la entrevista, así que saldré con tiempo.

But that would usually add emphasis or contrast. In most situations, leaving out yo sounds more natural.