Not sure I'd be much help...........
If you decide to ride the race...Major good luck and let us know how it goes. My only thought would be, don't do it for him but for yourself but then I've been divorced twice so obviously I don't know squat about hubbys! LOLOL
As for the bike: since I seem to be collecting bikes now faster than I can ride em - another bike doesn't even raise an eyebrow with me!........I'd say go for it, but then I say that for just about Anything!
Heck ya only live once nah?
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"