if you have an LLC and both properties are under it, you just need 1 operating account.If both are under your personal, 1 bank account specifically for the rental is enough for operating.Security Deposits should always be a separate account altogether.

Then what happens is the lender reports your payment history to the credit bureaus and each time hereafter if you ask for another loan and the lender pulls your credit then they are going to see your payment history and whether you made your loan payments or not which will likely influence whether or not they lend you money. 

This is a pretty simple deal for a bank/credit union in the area to do a DSCR loan.

I got a PA for 300k/FHA loan. 720+ credit score, 75k cash, and good income.

Right now, we’re carrying about $60,000 in debt ($40,000 in credit cards and a $20,000 car loan).

but keep in mind CA has higher taxes and reg fees and I’m not doing more than 1-2 flips (short timeframe flips)  a year and many years do 0 flipsDo most flippers put flips into LLC Or in personal name (sole proprietor)  in CA (where you must pay $800 yearly plus accounting and other fees $300to $600+ yearly to maintain LLC) Pros for personal name-save on taxes accounting.

Monitor the account that all x number of payments went out.

I have one lender that will go up to 85% but need 720 credit or better and 1.25 DSCR no rural areas

I guess I could do some work-arounds -- maybe reserve one unit in the first purchase for use as an AirBnb, and reserve my own time in it when needed - instead of claiming it as a primary.Are either of you (or anyone) familiar with a finance product/loan that will allow me to purchase under $150,000 (w/ strong credit) and do much of my own work and live-in a portion as a primary residence?  

You don't know, what you don't know.Bigger Pockets is a great place to find a tax accountant specializing in real estate taxation.