You are off to a great start, the fuse looks good. Have you decided on engines yet? I think one of the challenges in the 335 as a model is the cooling for the rear engine. Also, I imagine, the fuel tank being so far from the CG.
Do the plans recommend any particular retracts, or have you thought that far ahead yet? The plane has a unique stance on the ground, and it would be nice to capture that on the model.
-Ron