To answer your question Nessie, I'll be diving with Strand Diving. I haven't dived with them before, but have it on very good authority they're excellent. Shall I post a 'trip report' when I get back?
Big T-I'm following your advice and using the dry suit. As I said in an earlier post, it's lighter than the semi, I know where I am re. weights, and also putting it on is like pulling on a favourite pair of comfy jeans. 9-15 C? A nice warm bath!! I remember doing a UK shore dive, water temp was 14C and shore (with wind chill) was 9C. There were fishermen on shore wrapped up and freezing saying we were mad. We were dressed for the weather in drysuits. They weren't. Who was mad? I'll let you lot work it out... Dive safely.
Perhaps you could do some sort of deal - get the washer, and then the dryer chucked in for 30% off or something, if you buy a certain model? Thus leave you some cash to go towards your intended dry suit? Just a thought.