Go for it - it was very straight forward to do. Just go microShift advent X for the rear derailleur, trigger shifter and cassette. If you have a square taper bb then you can get cranks with 104bcd 4 arms relatively cheap - if the bb is shot then change to Shimano hollow tech II and get a new external bb and cranks with 4 arm 104bcd - that will be the most expensive bit - 104bcd chainrings cover all the way from 30T tonway beyond 50T in 2 T increments and are cheap and easy to get. I've used Deckas brand and they work very well and haven't worn out - I'm currently trying to destroy them in the Pyrenees. Brakes - while rim v-brakes will work with decent pads - koolstop - discs are better - the cheapest Shimano brake set will do you just fine. - anything else is gravy