I have been flying my kit bashed SE for 2 years. I never consider weight as a factor with the SE. I actually put mine on floats on Wednesdays during summer. The floats are foam and 32" long. I also use a 6 volty battery and DuBro control linkages. The OS 55Ax is a great engine for the SE. I hardly notice any decreased perfomance with the floats on.