Hi there, and nice build. The Hei Hei is a nice ride too - I've recently bought myself a Leroi, which was a 2006 model equivalent to 'The King', which was the name of the 65 mm rear travel frames prior to the Hei Hei.
Anyhow, I had the same mid life realisation that comfort was becoming important and that if I didn't treat myself to a FS now, it may never happen.
I paid a bit more that you for the frame, but it was brand new and you can see the final build.
According to Kona the Leroi is 5lbs 4oz, and differs from the King and Hei Hei with carbon seat stays.
I attach a couple of photos, and notice that you also have a Kilauea - I have a 1996 version, which is just going off for a respray and a modern rebuild when it comes back.
You have some good kit on that there bike, cannot say that i have ever come across that frame before but looks good. Are they 717 rims you have on that, got them on my Kula nice rims.
Now ridden the Hei Hei for about 100 miles decided that the cheap deore crank set has got to go (creaks like mad) and the Hg50 cass (to heavy) already changed the seat post and saddle. XT chain set and cass on its way from Merlin as I write. Rough weight taken this afternoon 11 kg. Riding it tommorrow for the 3rd day running can't get enough of it at the moment, up against mates new never ridden Lapierre X-Control 310 should be intresting.
'96 Proflex Beast
'94 Kona Kilaula