Yes, 7075 can be bent slightly, but it will be hard to do. The 6061 aluminum is pretty easy to bend, but I would never use it for a chassis. I made a chassis for my first gas RC, a Kyosho Sandmaster, which came with a PLASTIC chassis. We had to have a machinist make the bends. We were hitting it with a hammer and it only bent about 30 degrees, which is around the same angle most chassis's use for kickup, which is what you're describing.
Kickup, sometimes called kickback, or the angle up in the front of the chassis, helps absorb bumbs, collisions, and landings. You DO need it, so don't just make a flat CF chassis. The way CF is made, it is layed down in sheets and uses a epoxy to dry and harden in it's place. It takes many layers to make even 1/8" sheet. It can also be very flimsy. It IS possible to make a CF chassis with kickup, most people just don't want to take the time to do it.
My advice? Use the stock chassis and make yourself a CF battery/radio tray. That's what I plan to do agian. Here's a CRT I had. The radio plate and battery trays were made by nl12 here on the board. I plan to have a similar design:
