You shouldn't put it all in your account day one.

However, if you expect consistent support and accountability, you might want to look elsewhere.

By the way, that's one of the reasons I don't want to touch pre-foreclosures, with accounts delinquent for 60 days.

Study the market.

If you want to shield yourselves as the owners of the properties, then I guess it's possible, but not sure why you want that extra accounting headache.  

We also have a decent savings account and a strong income, so we’re in a good financial position to make some moves with these properties.I’d love any advice on how to proceed, including options I might not have considered, and how to best manage or renovate these properties for the long term.

Yes we always account for R&M, capex, vacancy, insurance, property taxes etc in our numbers.It's definitely NOT all properties that are cashflow positive, but we are still finding them.

My question to everyone is how do I open a business checking account without my partner being involved?

I have set up a LLC for a PM company, opened up the accounts.

However, beyond that if they are honest in assessing themselves, they might choose to hire or partner with people who can fill the other roles needed such as a realtor, accountant, lawyer, etc.