Teci
I wouldn't want to be responsible for you not broadening your DIY horizons. Like seconduser clearly states, there is a big saving to be made by getting stuck in yourself and if you can set aside the time it really is worth considering. Just make sure you are organised, have good neighbours, a bucket or two (emergencies and necessaties....you know what I mean, nudge ,nudge) and someone to fall back on if you get stuck.
However I couldn't possibly condone the use of any plumbing products not within the Oystertec stable. We are on the OYS thread you know.
seconduser.....that sounds like a mighty fine bathroom suite you put in there. Do you have a bidet? Great for washing the feet.LOL