Seeing as how you can borrow at least $100k on your primary (soon-to-be investment) property, I advise you to ONLY use those borrowings toward ACTUAL deals, not pro-forma education*!

@Richard Dunlop  I think the tenor of the OP  was what markets will double in a year... and the assumption was what markets could someone basically buy on the open market at fair market value and see their property appreciate by 100%... not buy distressed assets or some wholesale deal were someone ripped equity form a seller.. but a market that will just double. while this may happen somewhere but not likely... your correct though in many markets its not very hard to find distressed assets day one that are worth ( to some one) double what you paid for them... eaiser for sure in the rougher neighborhoods as you have abandoned homes burned out landlords etc...

Pro forma model just hitting the market cap rate, bad area, old property, 5 year old or less property, High vacancy, small units, poor unit mix, no amenities. 

However, my pro forma are being executed with a 0% appreciation over the next 5 years.  

@Hank A. generally these policies are sold with pro forma data showing how much your money will grow.

Bit of a tangent to the OP's question but what I 'love' are pro-forma statements that have no basis in reality. 

Thus I am a bit paranoid about limiting liability should I ever have another awful tenant like that.So I have been considering whether to form a corporation to own my next property.

You will have to have an amazing pro-forma and investment strategy to bring in investors on this.

I'd absolutely love to connect with local area wholesalers and real estate agents who have seen deals coming through Denton County and are willing to sit down and form a professional and friendly working relationship. 

I guess the big question is can he form a SOLO 401K  POST RETIREMENT.