what a great first time project ! i had a go on the first endorphin in the late 90s and have always had a soft spot for it .
As far as the build goes its all down to budget and what you like
9 speed was around before your frame was made so a full on XTR M952 /3 would be awesome , i could not live with rigid myself so would go for a nice set of Pace forks , keep up the carbon ! maybe some carbon bars too ? .As for the actual hands on build its pretty much " nuts n bolts",
there is so much help and advice out there its not that hard tbh , and if there is a job you really dont want to tackle then sublet it to your LBS !
I am amazed at how well some of these components last as well , my bike funds are always on a shoestring but i have picked up shifters , mechs etc that despite being 15 years old work great .
So do your homework first then get in there
" What about you? Do you find it... wisible... when I say the name... 'Biggus'...
... Dickus? "