TOO MUCH!!!! All I can do is built as light as I can, what it weights when finished is what it weights, adding lights and pilot figures just adds to the count but that what Rudy wants. It will be scary on the first flight but there's a lot wing area, in my opinion bigger planes can handle higher wing loading without a problem. Rudy has a T6 Texan that weights over 33 pounds that floats like a kitten when the flaps are deployed. Here's a recent photo of the fusalage, almost ready to stick back into the floats.