Changing the hub is easy enough, the best option is to buy a second hand one, the
problem with the flanges is they get stuck in the bearings, when i changed my LC hubs to LCR ones i wanted to put new bearings in i managed to get the one side separated but couldn't do the other one so had to buy a new flange-£70 from Sere motors (in the dealers section) you dont need a press though i did all the bearing my self, i took the
problem hub to a garage and they couldn't get it off either, so i would have had to get the flange anyway. if you bought a second hand one and were happy with the bearing it is a straight bolt on job prob 2 hrs, its when you want to change the bearings you can have problems.