Good for you, I think it's all about challenging boundaries, especially self-imposed boundaries.
Self imposed is correct. My next fear is over coming a circular saw. Jig saw, scroll saw, sawsall, I’m totally fine with. Just something about seeing so many posts about accidents with them has me freaking out. If I could get HD to make all the cuts I’d be thrilled. Lol.
That kind of foam is not very good at sound deadening. There are several threads on this forum about sound deadening, and a lot of info on the web. So check those out.
Do you have any MLV, mass loaded vinyl, on your bus?
My Blue Bird had lots. That's what I will use on the wheel wells.