I'm going to have to agree with Silversurfer here. That thing looks, like, a low wing 540T with a wing thrown on top as an afterthought. I don't think you should produce it, at least if it will look like that.

I think quite a few people were looking for something new and exciting when you first whispered things about a biplane. This is not either of these.

Sorry to sound harsh and it IS only my opinion. I really love the rest of your line - I just think this thing would stick out like a really sore thumb compared to the rest of your aircraft.