I have an old mtn bike. It has 6 gears on the rear cassette (28-14) and the front crank is 46/36/26. I'm thinking of putting on an 8 or 9 gear rear cassette ranging 30/11 or 32/11, and a front crank of 44/32/22 so it will be a little easier to pump up steep trails.
How much work will this be? And since this bike is nearly 20 years old, is it just too expensive? I know I'll need new derailers and such, what other things will I need to replace or problems might I run into? Would it be cheaper to just go out and buy a new mtn bike?
I'm kinda a newbie at bike mechanics. Usually just work on my old tractor and pickup.