Presenting and offer for a residential building

[Charles Hayzer]

Hi there, I own a a couple of single family homes. Im now looking into my first multi family building can someone please walk me trough the step my step of the process. here are a few questions that come to mind im sure im missing some so please fill me in...  

1 when giving in my offer that will include financing do i send it pre approval like by a single home?

2 whats the typical time frame, i know my single its 60 days, is this 90 day?

how much % is the typical amount down when signing the contract ?

its in new jersey so i guess i can do the building inspections ones im in contract while under attorney review

whats else and im missing    

Thanks!