To improve DSCR there is 2 simple functions, either MORE in rents, or LESS in loan. 

Basically looking for a pretty simple template that specifies the renter details, duration, and acknowledges they will follow the rules for my condo association.

Just a simple statement such as "I hereby forever release my redemption rights to the following property:  (with legal description and street address and tax parcel ID number) and then they sign and have their signature notarized. 

Simple, convenient, and cost-efficient!

Give something first - my example is simple - Can I cold call for you, I need to practice in this area anyways?

I would want a concession on the sale price or a seller credit for this so that I can try to end up a little ahead for the hassle and also to keep the deal simple.

So In SIMPLE terms; you are stating that REGARDLESS of whether the FULL $60K in funds paid to the Seller for the OPTION to buy the home at $300K is APPLIED towards that $300K "Strike Price" reducing the remaining amount due to them to $240K OR if only $30K of the $60K in funds paid to the Seller is APPLIED reducing the the remaining amount due to them to $270K - the Tax Treatment for THEM (the seller) is the SAME on the $60K paid for the OPTION ?

That's the simple path that works every time.

Keep it simple and buy in a an entity in the state where the real estate is located or where you live.hate to seeing posts like yours where investors have already spent unecessary

But it becomes a simple math equation:  $$/month income to replace divided by the average dollars per month per unit owned will equal the number of units you need to own to replace that income and get toward FIRE.