RE: Cannister installation
Euclid
Make sure the MVVS 45 you get is the magnezium case one, this is the only one they make now and is the most up to date, you can recognise it by the slightly gold colour of the crankcase and of course its weight.
The QQ 85" Yak does not have provision for the cannister, but the new 86" Yak that will be comming out in the new year will, if you need something sooner the Hanger 9 Extra 260 has provision for the cannister and has had some very good reports, I am thinking of this one myself.
We also have a 7Kg limit in the UK too fly anything over that limit needs a certificate of competence from the Large Model Association, or a British Model Flying Association B Certificate, which involves a flying test and safety questions, this applies too over 7Kg and up too 20Kg, over 20Kg needs Civil Aviation Authority permission etc:
Mike