use a non detergent ,single viscosity oil for best results. change it after a reasonable amount of miles, say 500?!
keep the revs down, as the rings will have a tendancy to flutter a bit until seated properly. to encourage the rings to seat, find a long shallow hill, if possible, and use a "ROLL ON" approach. use the torque to pull you up the hill. the high pressure combustion gasses will help to push the rings against the cylinder wall ,helping the sealing process. ( under reasonable RPM)
as far as wet or dry assembly, using too heavy of an oil could lead to carbonization. when fitting dry,, use a torque wrench to find the breakaway torque, then the running torque to keeping things moving, and of course, to look for "tight spots" during rotation.