Too cool,
I just bought my first set of floats as well. It looks like the step is correct but, according to my research, (which has just begun) you want your wing to be 1 or 2 degrees positive to the floats. In your picture it looks like your wing incidence is negative to the float!
I believe this will make for a struggle at lift off. You don't need an incidence meter. Just level the float and then measure from LE and TE to the top of the float. Use a square to find the center of the LE (bottom of the square runs flat then where it hits the LE is the center point) Check your plans make sure the stab and wing are 0-0, level stab level float etc etc......
Please correct me if I'm wrong anyone, I will be here soon
Nice looking plane!