Thanks for the posts!
Let me explain a little more to help understand my crazy plan.
The kind of flying I want to do is take the plane on long rides from Wisconsin to places like Idaho where a Kitfox does very well in. Then to the Bahamas and on to Anchorage.
My thinking is if I can get a Kitfox "decked out" with glass, turbo, AP, etc., it can make all day cruising with oxygen at altitude easier. (I'll never plan to make new flight plan in the air anyway). Then fly "low-and-slow" when I arrive.
If I don't need a large useful load, I can save a lot by not getting a larger certified cross-country aircraft and keeping the plane in a barn instead of an airport hangar. So, a "decked out" Kitfox will also cost a lot less than a 1980s C-206 (for example), I'll be using a lot less fuel, and spend a lot less on maintenance! I understand a larger plane will offer a faster/smoother cruising flight, but the Kitfox should be a lot more fun.
@ WWhunter. Your correct assuming I didn't want to do a full build.
I'm not against doing a normal build. But after I get my PPL, I won't have a plane to fly for a year until the build is done. - I can rent a C-172, but rather not.
I searched and didn't find any used Kitfox planes configured for cross-country flying. So it seems I have 2 choices:
Get a SLSA with the glass, AP, turbo. etc. with every option I want. Then keep it as-is or convert to ESLA & do LSRI (like Paul Z said) . I don't think I can alter/add much after the factory build is complete (Factory upgrade or personal upgrade).
OR
If that's not possible, just do a normal EAB the way I want it. I'll just need to learn a lot, invest in some tools, and put in plenty of work.
EDIT: Maybe either way it's a good idea to get a 120 hour Light Sport Repairman's certificate like Av8r3400 said. Doesn't sound like much if I spend 500 some hours on a build.
Please correct if I made any obvious problems with this plan.