i'm not completely positive what will work and what won't, so i'm just going to throw this out there. tell me how wrong i am about this.
my wife has a late 90's or early 00's cannondale r300. it's got a triple sora 8spd group, aside from a tiagra 9spd rear derailleur. she loves the bike, but recently decided she'd rather have a flatbar instead of the drops. i'm mechanically inclined enough to do this myself, but i just want to make sure that it'd be fine to pull off the brifters and throw some 3x8 deore shifters on there. are the shifters and brake levers going to pull enough cable for the derailleurs and double pivot brakes? is there anything else i'd need to do? help please!