#6 is closest to what I have invisioned from the start. I think the Supra on the side if reduced in size by 20% or so would make the boat longer, more sporty and give a hint of mystery. The thought of a large Supra on the side of a boat translates to me "THIS IS A SUPRA!!"...... This works on some boats, mostly the way too kool $80 000 ones.
A larger supra across the transom would complete the look.