I'm about your size. I use this:
http://www.sordaustralia.com/SORD/in...=1&c=29&p=1488
I think most plate carriers, wasatch, chest rigs should work fine for you - unless you're insistent on a vest type rig. Military Moron is about our size too - bigger on the chest, but about 5'7" so his site has a variety of information on what fits smaller sized dudes.
http://www.militarymorons.com/
If you need raw materials to make your own gear:
http://www.diytactical.com/main/
There's a book sold on DIY tactical that shows you how to convert ideas into practical tailoring technical drawings so you can cut and sew them into the final product. Can't help you much more really. Good luck.