Anything rented longer than 30 days is legally a long-term rental.

I would hate to see the buyer default and then discover you lose everything because your contract wasn't set up correctly.Yes, you can terminate/evict as long as your contract is set up correctly.The tenant/buyer should not pay your mortgage.

How long do you need to hold them before reselling? 

Apologies if you already stated this...how long did it take to reverse from your account from when you received the email?

My purchase price was over 20 years ago, I do not remember closing costs, have refinanced twice at least and I have been renting it for almost as long. 

We're hoping to do seller financing when we buy our first rental investment property, so I'll be hand-writing letters to long-time owners of rental properties (mostly single family or small multi-family).

If that's what you want, it can be, but you want to be a strong asset that will earn money over the long haul.3.

If you can get a long term commitment, cool, otherwise be cautious.

So let’s say you invest $50,000 when you are 20, with an investment kicking off 8% interest, at 38 your investment will grow to $200,000, at 47 $400,000, at 56 $800,000, and 65 $1,600,000 (as long as you reinvest your initial investment’s returns).

Thank you, I've previously requested a copy of the new Rules & Regs, and now have also submitted the request stating I need them even if I need to order and pay for a whole resale disclosure package, although that shouldn't be required for a long-term owner who just wants the Rules & Regs