Seeking house hacking wisdom (first RE investment)

[Ethan Perry]

Hello all.  I'm 21 years old and am closing on my first property in 2 weeks.  The property is a 3/3 townhome with an unfinished basement. Once the basement is finished, the TH will be a 4/4.  The purchase price is $225,000 and it has already appraised at $234,000.  I'm using a 5% down conventional loan and was able to lock in an interest rate of 2.99% (thanks money printer).  Its not a home run of a deal by any means but its a great way for me to take action, avoid renting, and get a start in the real estate game.  I have a few questions for experienced househackers which I have listed below.  

1. How important is having separate bank accounts to separate my house expenses from personal expenses? I'm planning on renting out 2 bedrooms at around $600 a month. My PITI will be in the $1300-$1400 range which means I likely won't be cashflowing. I know that rentals should be treated just like businesses which is what they are, but seeing as the businesses would technically be losing money every month, I'm not sure how crucial the separate accounts would be. I could be totally ignorant on this and am curious to hear feedback!

2.  What rent collection methods or tools have people found best?

3.  In general, what tips, methods, etc have people found helpful in making their house hacking successful?

Thanks for taking the time to read!