Approx main jet size for starters?

My 1000 motor turned out to be a pile of bad. I just installed a 900 the other day and bolted my J intakes on with police bike 34 CVs with pods. I'll get some needles soon, but anyone here have a bike basic same set up? If so, what are your mainjet sizes. Im guessing it'll need to be around 135's or so? I'll shim the needles for now as well until I get new ones. Im itching to ride.
Just installed large comp Kerker baffle 2.5 diameter on new megaphone.
Love that deep sound......
When I get it close I'll post up a boobtube video for fun.