Congratulations!
If You want to take this to the next level:
Install this:
https://www.amazon.com/WEN-55201-Mag...gateway&sr=8-1
Break engine in
Run dry
Drain carb by opening the small brass screw attached to the clear drain tube to empty the carb bowl
Purchase American made spark plug to replace the Chinese one, but keep it for spare
Change oil and have a replacement quart on hand
As far as the A.C. Try Aldi grocery store for their 7,000 a.c. Unit for 199.00
Propane, I get the draw but think hard about this. Liquid propane has 74% of the energy gasoline does, so you need 1/3 more on hand. Second propane needs 20% head space in the tank. So a 50 gallon tank holds 40 gallons and is as useful as 28 gallons of gas.
Again if this 3500 watt unit does not start your ac unit in testing I have the solution. I just am not intersested in the peanut gallery comments if I post it now.