Have owned a Jayco 28BHS for nearly 4 years now, never been back to a dealer for any issues, has been rock solid. Great floorplan IMO but I`m biased of course....
Wow, that`s an impressive project you have going there! Lots of work but you will have a custom built one of a kind 4 season unit when ya get her done! Best of luck finishing the job.
I use the Racor filters in my boats. They have the clear bowl at the bottom with the valve to drain it off occasionally. They are a bit pricey, 25-30 dollar range just for the element but I have NEVER had a fuel issue since using them, around 700 hr...