2) When using other people's money to invest, what is the best way to set up an agreement on a limited budget?

If you are signing contracts on behalf of others, then you are required to have a real estate license or be an attorney.

Typically in my experience at a large real estate development firm, we worked with local attorneys on the appeal process every year.

Have been reading up on this a bit and it seems if I get it into a roth ira it can be used for downpayment funds eventually with lower taxes removed?

The only thing to be aware of is that some sellers are negotiating with several buyers and once.  

Will having that home on our credit negate us from being able to seek additional loans for other properties? 

Down payment, credit score, and pre-payment penalty (on DSCR loans)  effect the interest rate and the cost of the loan a great deal.

underwrite the loans properlyIt's great to hear that you're focused on properly underwriting the loans.

Congrats on your first fix n flip!!

Or if that’s not allowed sell it to a friend who will then sell it to my personal IRA at a discounted rate so when I turn 65 and sell the properties , I don’t have to pay any tax on all of my properties assuming I don’t sell them until they are in my IRA account…