Rear suspension bushes

[deano-1000]

Hi, after a little advice please. I have a 2.0 TDi saloon 2007 with 66000 miles, the other day one of my rear springs broke, right at the bottom, you had to remove the wheel to see it, anyway, not a big job i know but wondering if it's a good idea to replace the inner bushes on the lower suspension arm at the same time, the ones inboard towards the center of the car with the concentric bolts through. I know normally you would mark these bolts before removal of the arm then refitting, but unsure if this is the case when renewing the bush. So questions are, the cars done 66000 miles so do I need to do these right now while I'm changing the springs, or wait for them to fail an MOT, and, is marking the bolts OK or will it need the camber checking at a dealer.

Much appreciated :)