[35cab]

I have a aftermarket dropped axle on my 35 and run 16 in wheels, 6.00/16 tires but kept the stock spring as I wanted to lower it slightly not put it in the weeds. I also have a chassis engineering sway bar which improves the ride.
I also run rear skirts (which I see you currently do) so again did not want too much of a drop in front.
I have F100 front brakes, they stop the car fine, perhaps an easier installation.
I always think 15 inch wheels can look a bit small but I suppose it depends on the profile of tire you use.
Sorry not helping much here, but that is a nice looking coupe and with the skirts sits really nice.