ORIGINAL: salat
Will Norvel 061 work?
What prop would be good for 074 and 061?
I'd go with the .074, and either a 7x3 or 6x4 prop will give you lots of pull. The .061 might get it off the ground, but assuming a 20 oz AUW it's not going to fly the way you want an Extra to fly.
EG