That case looks so damn sexy... If I was a business man and you handed your proposal in that I'd sign it without reading it lolz
If it was me I wouldn't use the heat wrap on the exhaust and just use the heatshield on the bumper on its own.
The heat wraps cause corrosion even on stainless steel extractors/headers, as it doesn't allow the material to breathe and holds in moisture during condensation. I haven't heard of this happening on anyone using heat wraps after the catback or mufflers, but then again I also don't know anyone that uses heat wraps on the catback or mufflers. And assuming you're exhaust is standard I would guess that it's made of mild steel and would corrode faster.
Another option could be HPC Coating (High Performance Coating) might be known as Thermal Barrier Coating in other areas. Much better albeit more expensive.