We have added parking behind the home on some of our houses or extended the driveway to allow for more off-street parking. 

things missing in your list (everyone manages differently, so take it with a grain of salt)Vacancy rateTurn overbad debt legal fees (evictions as needed)accounting fees for professional tax prepmaintenanceProperty TaxesSales Tax on PM fees (In NM, this is charged, not sure about where you are)Reserves for replacement CAPEX - furnace, water heaters, ac, roof, parking lot, etc.Admin, software, advertising, etc.Cost segregation study for accelerated depreciation captureAs for your loan. 

If you don't pay he gets the park back and your asset.That would put me at more ease, knowing that you have skin in the game, and are going to pay me.Gino

In some jurisdictions, off street parking can be a requirement.  

They lack the skills to offer a price that is even in the ball park and are ill prepared for the reality check of where the market 'actually' is.  

Purchase price: $8,000 Cash invested: $2,000 I purchased 2.5 acres of Raw Land in Joshua Tree, less than ten minute drive from the park and downtown area in 2018.Purchased via seller financing.2k down with monthly installments to pay out rest.Current similar lots are selling for around $65kI plan to hold long term Would eventually love to develop something on the land-either an art park or residence.

Your passion for real estate and diverse interests in wholesaling, fix-and-flips, and RV parks will be a great way to scale.

While you can't create limitations against their lease and legal rights they have for quiet enjoyment, things like keeping common areas free of clutter or routine maintenance items that are tenant responsibility can often be added to help keep the expectations on both parties clear.

@Bruce Park best of luck in finding your first property!

It is in North Park, developing fairly quickly but nothing I would call 'luxury'.