You would probably be better off terminating their lease, renovating, and renting for market rate.If you choose to keep these renters, and they can afford it, I recommend increasing rent so they are at no more than 10% below market.

I also heard that the value of the properties I buy needs to be no more than 2x the value of my current property.

At that time one of our investors was previously buying condos locally in California and now the deals had dried up - no more cashflow.

No more foreign aid?

Pay him for Xacrly the work was done, correctly….no more, no less.

.• Peace of mind -- No more tenant calls disrupting my nights or weekends. 

after doing the math i personally valued these units no more than 105k purchase at the high end but getting in was going to be hard. my boat is under contract an i should walk away with 40k. so i wanted to get in touch and make a verbal offer of 105k to each unit and hope one bites. i was mentioning around Christmas time that my boat was selling and what i was planning to do. a few days later my grandfather called me and asked if i wanted to buy the unit for 100k. i said yes that sounds good. after looking at the unit i called to get a loan from my bank.    5% down, 95k loan. 

MTR might have no legal definition but it is no more of a made up term than STR is. 

Tell the buyer you will make no more concessions and if the buyer walks, so be it.

No more than a week for all inspections, such as Home Inspector, Termite Inspection, Septic Inspection Etc...Same for the rest....as @David Avery if you drag on the process, your seller will take another offer.