Hey Lukas, congrats on the money moves.
So with multifamily properties bigger than 4 units, you will now find yourself in the commercial lending world opposed to residential and the commercial side is a completely different beast.
When financing commercial purchases, banks will weight more of the decision on the asset rather than your personal credit. But the underwriters would still like to see you have some type of experience or a partner who knows what they are doing.
And just like with anything, it will be a very relationship based transaction (if that makes sense). One banker might tell you "No way!" and then the other one might give you the green light. I would suggest you start by talking with banks/credit unions in your area and see what suggestions they have for you in terms of commercial lending options.
I hope this helps provide you some insight. Feel free to reach out if you got any other questions, I'm always happy to help.
-BA