Take it easy now fellas.
Dude said my rear cassette has very little wear on it and that it is less critical to change the whole set up when replacing the front chain rings compared to the rear cassette or chain. Wether this is true or not I suppose I will find out on the weekend. For moneys sake I hope dude is right cause I don't want to blow $130 if I don't have to and I don't want a super heavy steel cassette for cheap.
Dude is incorrect. the chain will wear a bit first, play between the links stretching the overall length gradually. after a certain amount of wear (~.75% overall stretch iirc) the chain will start to wear out the teeth on the rear cassette - that will be the next piece to go, because there are generally fewer teeth than on the front chainrings and generally they are made of softer metal (though of course this will depend on what metal they are made of - short hand, the quality of the parts), which will be the last to go. if you want to check out which pieces are worn and what "needs" to be replaced (rather than what Dude says) get a ruler or chain checker and determine how worn your chain is (or get someone at a shop - preferably not Dude - to do so). if there's more than .75% wear, replace the chain - they're cheap and better to wear out one than start wearing your new front chainrings prematurely. then, check the wear lines on your cassette teeth: clean it off, and check the area between the teeth on all of the rings - there should be a darker/rougher patch that may be intact, or may be starting to wear/smooth out from the front of the teeth towards the back. ime as long as the wear indicator isn't worn past the halfway mark, you should be fine to integrate it with a new drivetrain.
"Nobody really gives a shit that you don't like the thing that you have no firsthand experience with." Dave