as far as the break in goes, i would use the heat cycle method.

this is how I break my engines in and they last a long time.

idle for 1 tank keeping temps above 190* put tin foil and a sock around the cooling head to get the temps up. let it cool for 10-15 minutes. then do the second and third tank do figure 8's of gonig only 1/4 throttle. after second tank let cool again make sure its at BDC then after third tank jsut refuel, DONT LET IT STALL. then the fourth and fith tank do runs up and down the street gradually getting up to 1/2 throttle, then let off and break slowly, then go to the track and take it easy for another 4 or so tanks before running it hard. or if you stay at home and break it in then for the sixth tank gradually get up to 3/4 throttle and slowly break, then for seventh tank gradually get up to full throttle then let off and break slowly. then for the eighth tank take the sock and tin foil off and tune it till it gets up to temp and just dirve like you would at the track, but dont blip it, just roll on and off the throttle. try to keep temps between 200-240* at all times

as far as clutch goes, not sure.