Just make sure to check it again after you have put the prop on - there can be a small change in geometry sometimes, unless you have the flywheel torqued to speck.
Personally, I don't do alternator belt tension until after mounting the prop, but there is more than one way to skin a feline....
Paul F. Dye
Editor in Chief - KITPLANES Magazine
RV-8 - N188PD
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)