Hi Neal.
I've bought some 'moongel' and also ordered some 8x5 Graupner props from the place you bought yours.
Flew it last night in perfect flying conditions and with my new mount it's pretty good really, no 'jello' just a slight vibration which I reckon I can remove with properly balanced props. Also ordered a prop balancer
Hopefully my 450 bits will arrive soon - started the build with the Turnigy Plush 18amp esc's. Col - and various forum posts - seem to think they will be fine with the Sunnysky motors.