Looking good so far. It'll look better in black (I'm not a big chrome fan).
My initial thought on the rear guard is please make sure to leave adequate room for access to the saddlebag side latch. I can't quite make out in the pic how much room there is for the latch, plus some people have big hands, so a little extra clearance there to access the keyhole might be helpful if it is 'tight'.
I think there may be some slight angle tweaks that can be made on the front bar to make it look more sporty, but I'm not sure what those would be. If the bike lies 'flat'/tires leave the ground and go parallel, then your bar angle makes sense, otherwise I think some offset from vertical to complement the fairing might look nice. As you pointed out, though, with the air wings and pedals, you kinda have to get the lower extension out as far as you have it, so really it'll come down to what happens after that lower bend/what makes sense.
Looking at your pic, and referencing the upper front mounting screws for the side fairing (not the lower two with the triangle cover, the upper two), there may not be enough 'heft' to the mount there to give adequate reinforcement for a three point mount I tried to explain in the other post. I see your lower support, and it makes sense, the mounting holes I'm thinking of are higher, and aren't looking beefy enough for a support, but I've never removed the radiator on mine so I'm not sure what is there frame wise.
Finally, and this might add too much to the price, but it might be nice to have the front bar 'slide over' some smaller diameter bars with some sort of spring pins to secure it in place (i.e. push in on pin, bar slides off), for those of us that remove the side fairings regularly for maintenance. The pins would have to be beefy enough to hold the bar in place in the event of a spill, but not look dorky in the process. I suppose you could use bolts too, but that might not look as classy.
Hope this helps with your brainstorming!