AHT:
Looks good, you have put allot of work into this
One point, would you not have been better wtih a caravan style cassette toilet where you simply remove the cartridge to empty, rather then have all that pluming in?
No, the whole idea is that its not a mobile home that you can manage with, its my house. (ok it moves but) I have never made do, yes easy to install but emptied every other day. My toilet will not need Mt ing for 6 weeks at a time.