You might start by finding a property management company that specializes in MTRs and ask them if they know of any Realtors who understand this niche.

There is a whole thread started by an investor who publicly shares his crowdfunding deals using a Gsheet, here: https://www.biggerpockets.com/forums/520/topics/294382-i-put-2-million-into-20-crowd-fund-deals-posting-performance?

I live in Southern California where I own a couple of investment properties; now I'm interested on starting to invest in Arizona.

I am not delusional about the amount of work this will take but I am extremely excited to be starting.

It's a great way to get started. 

An engineer would be a great start to help disect the conditions of the site. 

Since there is no "Rehabbing" catagory, BP, wink, wink, i figured i would start here. 

Found out later that this was this GC's MO to undercut everyone's bid, then make back the money and then some with change orders after the project had started. 

Start by reading "Long-Distance Real Estate Investing" by David Greene.

You have to pay capital gains regardless of whether you had a mortgage once you sell unless you do a 1031 exchange in which case the process starts itself over and you don't have to pay capital gains tax unless you sell and don't 1031.