I expect the 10X7 3-blade to be a heavy load on a .46. (right on the edge of too much prop for any plane with that engine) It probably will be too much... A 10X7 2-blade is a normal prop for a .46. You usually have to drop an inch of diameter,and/or one to 2 inches of pitch vs the 2-blade prop you'd use.
(change more for bigger engines... the 1 inch pitch for 1 inch dia, and other prop load equivilency "guess-timates" are based on .35 to .40 engines..)