Getting the bearing race off of the hub flange isn't that big a deal; I've posted about this elsewhere, mentioning the fancy bearing splitter method I brought up above ^^^, and others say they usually just take a Dremel tool with a cutoff wheel to that inner bearing race. Cut most of the way through it, but not into the hub, then hit the crack with a chisel & hammer, and it splits the rest of the way open. Drive something in to wedge the crack open further, and it just falls off.
Once you've got the new bearing in place and the hub back in the bearing, I understand getting the axle back into the splines on the hub can be a chore, but you can make a tool for not a lot of money to help grab the threads on the axle and pull it back towards you; instructions are in that thread I linked to above.
Or, I've made one of my own, and you can sure borrow it once I'm done with it, probably in the next couple of weeks.