So why is the $2,500mnth person paying $250 and the other one paying $350 ??????

Mind you, with mortgage interest rates in the US being so much higher now (and seemingly for the foreseeable future), I wouldn't be surprised if LTRs in Europe would cash flow better than in the whole US nowadays (to be verified).This being said, I don't and would never invest in LT rentals outside of North America  as I wouldn't want to face unfavourable landlord/tenant laws as a foreigner.

You can compromise without loosing good paying tenants if they pay on time. 

I would also share pros and cons of paying taxes on the windfall versus owner carry.

Keeping insurance and ownership in mind, what is the correct day to start the lease?

I have never been disappointed and have actually thought he pays an extreme amount of attention to my needs for the price he charges.

To be clear, you are not paying off the 80K mortgage.

Do you want a company that will keep the long-range investment objectives in mind or one that focuses on today and today's profit alone?     

Client rents that house and makes 1k monthly profit, plus has a really good paying job.

yes create the addendum but realize the tenant who has been paying could ask to be reimbursed for these costs as well as not accept the addendum.