yeah that is a good plan, I had a flash and found some cheap hard case's of ebay for £40 pretty tough like.
Got some foam cut to size and used a spray mount glue, to secure on the inside of the case, then secured the foam in place (used alot of spray, do it outside with a mask or you end up high as a kite as i found out first on the first case) i also took the lids off and replaced the hindges with catches, so the lid comes off, so it will not fall on my fingers. Then i cut shapes out of the foam for the controllers, then i covered the foam in a large black electrical tape, this has a rubbery texture which keeps the controllers secure and gives the foam extra rigidity, i can turn it upside down and they don't fall out. Now all i have to do is cut slots in the foam for wires and usb's. I am going to use smaller colored tape to cover these cuts in the foam, I m going to secure the controllers and usb with the small electrical tape to, then label all my fx etc and some costume stickers should have a sweet little set up going to put a video on youtube once I'm done cheers for the interest got some good ideas from this.
