Building my own rollbar....good idea or bad idea?

[team39763]

I've been trying to avoid having to put a cage in my truck, but it looks like I need to do it. I have access to 2 shops that said they would bend the tubes for me and I have an experienced welder buddy that will do the welding for me(he's also installed a few rollbars in other cars). I know I could buy a kit, but the initial cost and shipping are a little to much for me to swing right now. I just figured it would be simple to make a main hoop and add some rear bars and door bars. The head automotive instructor at the local college is a good friend of mine and he offered to help me with it too.

Here's the plan:
buy some properly sized chromoly tubing from cousin at metal supply co.
have it bent and notched at the college(with input from experienced pros)
have a professional welder to Tig weld it in for me

Is there any good reason why I shouldn't try this? Keep in mind my truck is slow and won't need to be certified or anything. I don't class race, this is just a grudge racing/test-n-tune truck. I'm only looking to put in a 6point or 8point rollbar. My [truck] money is tight and I wouldn't be able to afford the cage I want for several more months(if not longer).