Self directed IRA question

[Samantha Soto]

My husband and I both have Roth IRAs. I also have a regular IRA. So I have two questions. First, Can we combine our Roth IRAs to do a deal? Or do we need to keep the funds separate and I can use my Roth to purchase one deal and he can use his to purchase another? Second, is there a benefit to using the self-directed Roth IRA vs. the self-directed IRA?

Learning a bit more every day!  So thankful for this BP community.