Most of these course instructors aren't qualified to teach anything but the most elementary real estate concepts and try to make their courses more marketable by teaching concepts they have no business teaching. 

As such, you qualified for a truly self-directed Solo 401k plan (as long as you don't have any employees working for you).

They’re requesting what feels like an unreasonable amount of information, and the demands keep escalating.So far, they’ve asked for:A video tour of my home officeCredit checks on me and my partnerCopies of the deeds for every property we ownA copy of my partner’s home lease and utility billsBusiness phone billsA signed letter from the bank verifying our accountsBank statementsHonestly, it feels more like qualifying for a loan than trying to become a customer.

A $60K down payment will get you a $300K property (assuming your income is high enough and debt low enough to qualify for a $240K mortgage).

Over-relying on a coach for every decision can hinder your ability to develop critical thinking skills and confidence in your own judgment.5.

Because the number of qualifying risk/return deals is just not large enough to handle that amount of money at one time.

So more Roth for way less in taxable income incurred. doing this is easiest in a Solo 401k if you qualify but can also be done using a checkbook IRA as well. check out this post that @Dmitriy Fomichenko made explaining this concept.https://www.biggerpockets.com/forums/51/topics/1223601-how-t... 

You need to polish your skills, bigger pockets is a great place to start... find a local wholesaler you can work for/with and he will guide you. 

As long as the rents can cover both the current PITI and proposed P&I payment, credit is at least 680. you should be able to qualify. 

If you have your own business/self-employed you might qualify for a Solo 401(k) or multi-participant 401k whereby you can self-direct into real estate with those funds.