The cash was from savings and a personal loan.

Loans will be made on your personal credit and the deal. 2) you may never get to the point you won't have to personally guarantee a loan. 3) An LLC for each property is  generally  considered overkill.

Is it realistic to find one person to handle my situation?

This meant I had to go with another company and the state insurance Citizens was what my new broker could get, also cheaper premium.Then last year Citizens dropped a bunch of people and we were pushed to what ever insurer they could push it to - I had no say in the matter of course this is what they do.With Citzens they only would max coverage for personal liability to $100k and my umbrella (separate policy) required $300k on rentals.

Meet with your tax professional and see what they say.Your biggest reason for a separate account won't be for liability protection, but for separating personal & business expenses to avoid IRS audit.

If so, is a buyer broker worth the savings in money buy the loss in personalized attention?

Every non legit person, first thing they do is a website. 

(but I am worried he will just try to sell us a life insurance policy) is this even the right person to be meeting with?

If it is then the only downside to the Roth would be the more expensive financing (as it has to be non-recourse and not to a person.).

From what it looks like it's the same person who responds to your email at 3 in the morning and it appears that this person may be oversees, I could be wrong but that's what it appears to be.