Hi,
http://ultballastspecs.tsqrd.com/bal...B340R120HP.pdf
is your ballast (hopefully the link shows up).
Looks fine...just take it easy on the overdriving (start with 1x, then 2x and etc) -- especially if you don't have a multimeter. Theses ballasts are not dimmable.
Are you planning to put a switch between the output of the ballast and the tube ?
- Victor.