A property manager that can assist with rent collection, tenant screening, maintenance, and run an online ledger for us to track expenses.

Review every statement, email them with questions, and ask how you can assist them.

The biggest problem I see with seller financing is the cost of repairs (as well as holding, selling, etc.)

Quote from @Don Bessette: I have a 30 plus year tenant that can not keep up with maintaining their unit, it is filthy inside and in desperate need of renovation, all systems are in good repair and I respond very quickly when issues are brought to my attention.It is also well below market rent, and they struggle to pay the current rate.Looking for suggestions on how to gently proceed with the notification to move. 

They are responsible for repairing it, whether they have insurance or not. 

We've sold 65+ homes and the biggest request we get from our Buyers is help with closing costs.Most of our deals we're providing anywhere between $5K-$10K to help Buyers offset the cash requirement to purchase a home.Even in today’s "high" interest rate environment, many Buyers prioritize closing cost assistance over an interest rate buydown.

Needs gutters, full kitchen and bath, floors, paint with some drywall repair, windows, front porch and the deck on the rear is pretty poor as well.

Regardless of how you financed your rental property, you can generally deduct repairs and take advantage of depreciation schedules.

Are you looking at the maintenance/repair costs of the homes once in place, W/S/G costs. septic expense if applicable? 

Say 50% of that goes towards repairs/maintenance/vacancy etc.