A fellow newbie here Keyne...our 2nd trip on a recently acquired Roadtrek we were near a lake with a moderate amount of bugs. I got a roll of screen fit for a house door and cut them a couple of inches larger than the front windows. Then I used thin sheets of magnets that are perforated to separate into 1" squares, and used them to mount the screen on the outside, spaced about 3" apart all around the opening. Worked for the 3 days we were camping! Until I can find off the shelf ones or convince my wife to use her sewing skills, I'll probably keep using this.
Good luck in finding your dream RV...
2001 RoadTrek 170, Dodge 2500 5.2L V8