Either way you’ll probably meet great people in the industry and make friends with amazing agents who will help you in the future.

(Especially if appreciation and rents seem maxed out for the foreseeable future).

In the future, I will definitely request all documents prior to a PSA as you suggested.

I might possibly have a project or two in the cities in the near future. 

I think you should lock in a rate since they are likely going to be much higher in the future.

looks like you no longer have this issue.But in the future if it happens again what's been mentioned so far - screen the new tenant, fill out application form, collect app fee, and have all existing tenant sign.IN ADDITION, make sure the existing tenants and new tenant understand, and include into the addendum if necessary, that all claims, damages and deposits are shared by all tenants from this day forward.That means if you see a broken window and need to charge them for repairs tenant C can't say oh it's broken before I moved in.Or if tenant B moves out and six months later you charge a deduction in the security deposit on a hole in the wall behind the couch he says the hole wasn't there when he moved out so it's not coming out of his deposit.At the end of the lease when you refund the deposit it will be a check to "A B and C" jointly regardless of who might be there or not at the end of the lease. 

I have work with a mortgage company that can borrow based on the future cash flows of the deal (with a down payment of 20-25%) for around 7-8%..

I currently do and I want a different future for myself and my family.

This will help you keep things organized and make accounting much easier in the future (like during tax time). 

You can follow me @bladedeatley on Instagram to see pictures of my current and future projects.