Baz and I are going to find time to sit down and have a look at the calender, and talk to the pub landlord. However, my gut feeling would be that he won't be too keen on either of the may bank holidays, as the are probably pretty busy then - but we will ask the question. Obviously, there are two bank holidays in May, which we will have consider.
The good thing is that, aside from the arranging the dates, there is very little organising to do as everything is there, and Baz and I already know a lot of the senic routes and things to do in the area. One possible activity would a trip down the Big Pit, which is quite impressive (former coal mine), and I don't think anyone will be disappointed with the Senic run.