Glad you've got the pitch lengths, as my list is back in the UK, at present. Is the rope length thing a consequence of enough to tie the knots plus a bit more to get you across the odd pool? I do not remember any serious rigging issues with any of the pitches (I haven't been down the last one, owing to a cold party) only the odd problem with water.
The first time I did the trip, it was just me & the wife with as much kit as we could carry (ladders) and we got well over half way to the bottom before running out of kit. We didn't have a pitch list and were simply playing it by ear. Five people with a pitch list shouldn't have an issue.
You need neoprene, though, it's neck deep in places. In September a neofleece should be adequate, it was for me.
Oh, and if you come across a very old sack full of ladders in one of the deep pools, UBSS dropped that about fifteen years ago and therefore will not want it back!