This approach can be a powerful tool in your real estate investing toolkit, offering opportunities to maximize returns while creating mutually beneficial deals for both you and the seller.Some books I recommend are:"Investing in Real Estate with Lease Options and Subject-to Deals" by Wendy Patton"Seller Financing and Real Estate Notes in the Dodd-Frank Era" by Dawn Rickabaugh"The Book on Investing in Real Estate with No (and Low) Money Down" by Brandon Turner and David Greene

To sum it all up: your top priority is to serve your interests and earn profit, therefore you should do everything you can to minimize risks and maximize profits.

Nicknames are a good idea if you need to manage all that.None of our local banks/CUs charge fees, but they also don't pay interest so my nicknames are 'keep as little as possible in this acct to maximize mmkt acct funds that pay over 4%

An additional benefit of a detailed engineering-based Cost Segregation Study is that it can increase potential insurance premium savings as well as provides support for the property tax appeals process.Additionally, it can help maximize renovations and improvements.A Cost Segregation study is an IRS approved federal income tax tool that increases near term cash flow by utilizing shorter recovery periods for depreciation to accelerate return on investment.

So I would focus on no prepayment penalties (you didn't mention any which is good) and also maximize the flexibility on when you repay, whether that's a longer initial term or options to extend. 

Don't necessarily worry about the profit of the PM company, remember your end game isn't to be a profitable PM company, but a profitable real estate developer/investor who has built a great PM company to maximize returns on your own investments.

Design and Planning: Work with an architect to design a project that maximizes the land’s potential.

A cash out refinance could be a great fixed rate option and a way to maximize your equity to grow your portfolio.

I maximized the VA loan entitlement and unfortunately the program limited how much I buy. 

In the mean time, maximize your house hack.