Congratulations,These costs look reasonable, but as you mentioned a double origination fee that they'll remove, so all good.

It took us 3 months to remove an illegal mentally disturbed tenant from an apartment who was sub-letting from one of the tenants. 

Remember your costs will be more for an STR, you'll be paying for a lot of things you wouldn't with an LTR - higher STR insurance, all utilities including internet, supplies like toilet paper, paper towels, dishwasher detergent etc, upkeep on furniture and linens if damaged, yard maintenance and grass cutting/snow removal, trash removal, etc.  

I have tried to remove National Parks from mine and a call did not do anything.  

Removed a pool it will cost a lot of money also. 

We removed it, and when with 2 propane heaters (one for the basement and one for the cabin).Some other things to think about:- Hammock- Bug spray- Boot tray for shoes- Snow shovels- Coffee and condiments for when they are snowed in and can't get out- Fly swatter for summer- If no internet service, then consider getting Starlink. 

Rehabbing units, removing problematic tenants, new infrastructure.

Removing tenants is a serious pain in New Jersey - though I realize those specific deals may be rehab and profit opportunities.

If you ask the manager to justify a fee and he starts hemming and hawing, move on or require them to remove the fee.

Heck I had a lot of posts removed because they were on the line of promotion.