New Hawk 250

[76firebird]

Hello all. I just ordered a new Hawk and it should be delivered tomorrow. I have also ordered the mikuni carb that has been suggested here. My plan is to assemble the bike and do the exhaust and air box mods and install the new caburator before I ever start it. I have a couple questions before digging in. What main jet and needle position would be a good starting off point? I live about 600' elevation. Also what oil would be best to break the motor in on. Thanks