It may be better to descend South East Pot via the scaffolded floor hole on the Bar Pot side. We found it possible to rig a traverse along a bottomless tube here when we found the South East Pot Extensions, which gets away from much of the potential rope rub. At the time we also descended the main way into South East Pot which involved using bolts in very suspect rock at the top. The bottomless tube has better quality rock. The whole area is fairly loose, being right in the fault zone.
Our original exploration bolts were standard 8 mm self drilling anchors which will almost certainly be knackered, so don't include these in any pitch rigging. But Benfool has used this route more recently than me so can I suggest you PM him if you're thinking of going, as he'll have more up to date info on the rigging situation here.
Or . . . has South East Pot been fitted with modern resin fixed anchors yet?