I have great credit but limited capital.

We have excellent credit and cash capital.

Keep your payment at no more than 35% of your income and minimize your credit card and auto debt.  

Home Equity Loan (HEL) or Home Equity Line of Credit (HELOC) – You could tap into the $150,000 in equity to secure a $30,000 loan.

I got a PA for 300k/FHA loan. 720+ credit score, 75k cash, and good income.

When you say that you will "screen" prior to showing, does that mean a full application with backrgound and credit checks?

HELOCs on investment properties can be tricky since many traditional banks don’t offer them, but some lenders, and some local credit unions might be worth checking out.

5C's of credit are a good framework to understand the fundamentals.

Is there a way I can "co-sign" with one of my parent's credit cards and be on their credit history in order to boost my credit score? 

•Use business credit or 0% interest credit cards strategically—just be careful with repayment timelines.Next StepsThe biggest thing you can do right now is surround yourself with experienced investors, agents, and lenders who have done what you’re trying to do.