I am 19, Currently in college, have a 790 TransUnion score, never missed a payment on any of my debts/loans.

I suggest to get pre-approved for the refinance loan amount before starting the BRRRR given that the hard money loan will alter your debt-to-income ratio to make sure you don't get stuck in the middle of the BRRRR deal.Sounds like you're on the right track with BRRRR, best of luck and I hope you can score some awesome deals!

And are there any strategies to get pre-approved from multiple lenders without dinging credit score too hard from several hard inquiries?

Tenant screening came back with fairly low credit scores for both, and one is on the national sex offenders registry. 

Maybe pick a room (office, dining, or primary bedroom maybe) and paint the walls and ceiling the same color and use a darker version of that color on the trim.

I would make sure they make a good enough income for the rent you are commanding, that their job seems more secure and they have a good credit score. 4. 

Depending on your market and the underwriting criteria if the DSCR score doesn’t meet the banks requirement you may need to either out more down or buy down the rate.

SCORE.

With these agreements, purchasers with lower credit scores or incomes may be able to obtain loans that they could not have been approved for otherwise.At the same time, the interest rate that a seller may charge can often exceed that charged by a traditional mortgage lender.

Even if your credit score is great, your bank account probably isn't, and that's what counts.