Bicycle Mechanics - Upgrade from 5 to 9 speed cassette

So, for my birthday present I have my dad helping to upgrade my drive train system; so I went to REI and bought a 700c wheel with a shimano Deore 8/9 hub on it. I bought a 9 speed sram cassette for it and I am going to have to space the frame, because the droupouts only measure 123mm and Ill need more, I also know Im going to need a new chain, my question is will my current bar end shifters (in friction) My crank, and my simplex deraileur work or are they are going to need to be upgraded as well?

The beauty of friction is that nearly any combination of derailleurs, shifters, clusters and chains will work.

have fun!

things only get complicated (and expensive) when indexing is expected to continue working across a variety of generations of components within the drivetrain.

So, for my birthday present I have my dad helping to upgrade my drive train system; so I went to REI and bought a 700c wheel with a shimano Deore 8/9 hub on it. I bought a 9 speed sram cassette for it and I am going to have to space the frame, because the droupouts only measure 123mm and Ill need more, I also know Im going to need a new chain, my question is will my current bar end shifters (in friction) My crank, and my simplex deraileur work or are they are going to need to be upgraded as well?You could have made your life easier by buying a 700c wheel with a road hub which is 130 OLN rather than that Deore which is 135.

I was shopping around and unfortunately could not find any hubs in the size i needed at any LBS; rei happened to have the wheel built up and at a pretty good price, my original thought was to just rebuilt the wheel I have now, scrapping the old hub and upgrading to one that will hold a larger freewheel cassette...
Fortunately, the thing about REI is that they offer 100% satisfaction gurantee, I can always take it back :)
Should I not go through with the frame spacing?

you can always replace the axle on the hub to bring it down to 130.

I'd avoid it if I could but if not the.....http://www.sheldonbrown.com/frame-spacing.html

Assume your frame is steel? Recently sread the frame on my Centurion to accept a 130 rear. It was 126 orig. I built a spreading device similar to what Park tool offers out of stainless threaded rod & nuts & fender washers. Also need a peice of small pipe to put over the rod to help with keeping it straight. With this device you can spread the frame slowly & check measurments as you go. It will want to spring back to the orig. spacing but given time it will work. Sheldon Brown method works but I think too much is left to eyeballing. Good luck. Do not see why you could not go all the way to 135 spacing without kinking frame.