Wyruszymy wcześnie rano.

Because Polish often leaves out subject pronouns when they are already clear from the verb ending.

In wyruszymy, the ending -my tells you the subject is we. So my is unnecessary unless you want emphasis:

• Wyruszymy wcześnie rano. = We’ll set off early in the morning.
• My wyruszymy wcześnie rano. = We will set off early in the morning.
  (with extra emphasis on we)

Wyruszymy is the verb wyruszyć in the 1st person plural form, so it means we will set off, we will depart, or we will head out.

It suggests the beginning of a journey or movement from one place to another. It is a bit more like set off than the very general go.

This is because wyruszyć is a perfective verb.

In Polish, perfective verbs do not normally have a true present tense. Their present-looking forms are used with future meaning. So:

• wyruszę = I will set off
• wyruszysz = you will set off
• wyruszymy = we will set off

So wyruszymy is grammatically a present-form shape, but its meaning is future.

The infinitive is wyruszyć.

A useful pattern is:

• wyruszyć = to set off, to depart
• wyruszymy = we will set off

If you want to recognize the ending:

• -my often marks we in many verb forms.

They do different jobs:

• wcześnie = early
• rano = in the morning / morning-time

So wcześnie rano means early in the morning.

This is a very natural Polish expression, just like in English. It is not redundant.

Wcześnie is an adverb meaning early.

It describes how/when the action happens:

• Wyruszymy wcześnie. = We’ll set off early.
• Wyruszymy wcześnie rano. = We’ll set off early in the morning.

It comes from the adjective wczesny = early.

Here, rano is an adverbial time expression meaning in the morning or in the early part of the day.

Some useful comparisons:

• rano = in the morning
• wieczorem = in the evening
• nocą / w nocy = at night

So wcześnie rano is a fixed, common way to say early in the morning.

Yes. Polish word order is quite flexible.

The neutral order here is:

• Wyruszymy wcześnie rano.

But you could also say:

• Wcześnie rano wyruszymy.
• Wyruszymy rano, wcześnie.
  (possible, but less natural in ordinary speech)

Wcześnie rano wyruszymy puts more focus on the time.
Wyruszymy wcześnie rano sounds very natural and straightforward.

A rough English-friendly guide:

• Wyruszymy ≈ vih-roo-SHIH-my
• wcześnie ≈ VFCHESH-nye
• rano ≈ RAH-no

A few pronunciation notes:

• Polish w sounds like English v
• y is not the same as English ee; it is a shorter, more central vowel
• rz here sounds like zh/sh depending on context, and in wyruszymy it gives a sh-like sound
• cz sounds like ch in chop
• ń in wcześnie is a soft n, like ny

Stress is usually on the second-to-last syllable:

• wy-ru-SZY-my
• WCZEŚ-nie
• RA-no

Sometimes, yes, but the meaning changes slightly.

• wyruszymy = we will set off / head out
  Focus on the start of the trip
• wyjedziemy = we will leave / drive out / depart
  Often suggests leaving a place, and can imply travel by vehicle
• jedziemy = we are going / we’re going
  More general, often about traveling or riding

So wyruszymy wcześnie rano is a good choice if you want the sense of starting a journey.

It is neutral and natural. You can use it in everyday conversation, writing, or more formal contexts as well.

It does not sound especially formal or especially casual. It is simply a normal way to say that we’ll set off early in the morning.

Yes, it is very common and worth memorizing as a chunk.

Useful time expressions like this include:

• wcześnie rano = early in the morning
• późno wieczorem = late in the evening
• w środku nocy = in the middle of the night

Learning whole expressions like wcześnie rano will make your Polish sound more natural.