This is something I am planning to do sections of sometime this summer. I just got my new KLR about a month ago and am slowly adding upgrades. Upgrades so far: Extended windscreen, gel seat, trunk and saddlebags, PD Nerg engine guards. The next one I am planning is a front suspension upgrade.
I too like to take it easy as I am not as young and "invunerable" as I used to be.
If not this time, maybe at a later date, probably after I am done with at least the front fork upgrade. I am 6'5" and weigh in at around 270#, so the stock suspension is very inadequate.
I am planning a road trip for sometime next summer also around the North Cascades Loop. Hwy 20 then back on Hwy 2, with some offroad exploring along the way.