Tweet..thanks, very good advice...my Venture 60 E was outfitted pretty much from the Hobby Lobby catalogue, with some help from the sales staff, some prior experience with much lighter planes. I got the Motocalc program, and that has also been helpful, in fact I thought I had too much battery with the tp6000. I'm also going to build a 4 star 40 (easier to transport) and plan on using the same power setup. Maybe use a smaller prop/different battery. Like a lot of people,I am very new to this! thanks again, R. Hovie