What you cannot do is use the funds that the C Buyer brings to escrow and pass those funds through escrow and use those funds to pay off the A Seller. 

If you're not careful you can easily end up paying $200/mo in subscriptions without even realizing it (this has been the case with my partner and I, between video game stuff and music and entertainment, etc. etc...).

You have to read a set pf plans to answer the questions, etc....And if/when you pass, you'll have at least 5 years of paying dues and losing money before you're any good.

Any jobs with a base pay + commission? 

If your mortgage is $2,500 then probably $500 of that is going towards paying down your  mortgage< so that’s another $500 profit.

If the properties are split into an LLC, then each LLC will need its own accounts.Checking: collect all income here, then use it to pay bills.

I have no credit debt and $12,000 of student loan debt I'm looking to pay off within the year.

Many of these platforms also send the same leads to multiple agents.Since most of these paid leads require work/follow-up anyway, have you thought about paying less $ for leads where there is significantly less competition?

The single stairway also has to be continuous to the ground floor exit.

I am looking for one that:- provides checkbooks, and - pays a decent interest rate.