That civilian complained about the jet noise where he built his dream home.

The site borders but is not in the flight path of a jet capable airport.My wife and I are just turning 60 and have not been real estate investors having once lived on this land.

Paint, primer, new texture, updated bathroom & shower, fixed lawn, new hot water heater, new cold water piping (it bursted),  added GFCI's to all of our outlets because the house was not grounded, added new cabinets in the kitchen2.

Or a private Jet !! 

And my walls are textured right now. 

You have Universal, Seaworld, Ziplining, Jet ski riding, horseback riding, 4 wheel riding, and a boatload of other stuff.

I called a few other plumbers and they can do a power rod / hydro jet for between $2,000-$2,500 but there is no full guarantee that will solve the issue.

Jetting is Usually about $800-$1000      ..   

I don't usually see popcorn ceilings but texture is common. 

Doing a roll up loan (land acquisition, soft costs/permit, vertical) over a 3 year cycle is too much risk for any private money lender in this market texture and I'd be confident to say that, even if they are a local HI lender or a lender who is very comfy to lend in HI.