You'll definitely need nose weight. Mine, with a Q-100 (almost 9 pounds of engine), still needed a dummy radial and about 3/4 pound of lead.....why opt for a lighter engine? As for the BME 102......

you should see E.'s bird whiz by. I would go for a heavy engine...old school as I am, I don't see putting these new light weight engines in a short nosed plane like a Bearcat, Tempest, Typhoon, etc.
Jeff