You have a great powertrain, my first coach was a 2000 Huricane 30 ft class A with the V-10 truly a solid work horse, and as far as the gen Turi I had one given to me however due to previous owner had replaced the pipe off the engine with a bigger size none of the adapters will fit, so now it sits in my shed.
Regarding the jumper for the batteries it is really a easy modification that wouldn't require much in the way of parts or expertise, frankly I wouldn't leave home with out one UNLESS I had some type of road service and a couple beers to drink while waiting for the mechanic to arrive
If I can share with you some advise, Originally when using the coach every so often I would use a fuel system cleaner (mine was the Lucas brand) my primary reason was due to clean the fuel system cause mh so often sit with stale fuel that I wanted to do everything I could to ensure a clean tank, lines and injectors. So while on a trip I would treat the system at least every other tank. There were a couple things I discovered when I used it and when I did not. The very 1st thing I noticed was how my "assometer" noticed a smoother power feel when driving, that is to say the engine actually runs smoother under load, from there I discovered how much less rough it felt when the generator was running (generators use carburetors which really enjoy clean fuel) and under load. However where it really became apparent was the increase of fuel millage, I actually saw 1 1/2 to 2 MPG increase which some people say thats not that much and you figure in the cost of the additive I almost a wash. to that I say "your right" except for a couple things, with the additive its continually cleaning the fuel system, the second thing is the reason the engine is running smoother is due to complete combustion, which creates less carbon. Now go talk to any ONAN service center and ask them what is the #1 reason associated with the gas generators, its carbon build up in the cylinder heads and thats because the engine for the most part runs at a set RPM. Now you said that you run your generator all night for your cpap machine, that really doesn't make the generator work hard enough to ward off carbon build up. So you get several reasons to use the additive as opposed to not, MPG, smoother operation, less carbon build up especially in the generator, and less vibration from the generator when running all night.
Now FYI I have since upgraded my MH to a DP that uses a Cummins engine, and when on the road I stop at truck stops for my fuel, what I noticed when using that crap they forced on use called Bio-fuel is the SMELL
from the exhaust when running, primarily the generator at night! So like for many of the same reasons as describe above I sought out to find an additive that could help me. I found several, however I went with the ONLY one recommended by Cummins, it called Diesel Kleen. the first thing was the smell, muchhhhhh better, then of course all the other benefits.
I have shared all of this only because being a mechanic for over 50 years I have never advocated and often discouraged the use of any additives, but I got to say with what were being sold in the name of fuel its no longer what we have known thru the years, that now were using our MH's for secondary living I really want to do all I can do to make it a pleasant cost effective journey.