Yeah.. regarding the 300, I was going with the 250 and Gotz from Vogelsang talked me in the the 300. We'll see as well.... But I will be going with a larger scale prop. most with the 250 users are using a 28" solo 4 blade. I'll be going 30" with a high pitch. I could get a 32" but asking a few folks and looking at my bearcat, the ground clearance might be too tight with little or no room for error. SL-Propeller in Germany makes a hub and carbon props for the 300. I ordered a few sets and they're on the way now. Solo does not make anything for the 300. Seidel in Germany also will make a custom scale Bearcat four blade, but I'm waiting to see it the price is just too far out there. I'm looking forward to see your progress as well. I can tell I'm going to have a lot of question on the 3W Bearcat. I'll try to keep posting my progress here.