Cage build help

Hey guys. So my buddy is going to build me a cage for my 900 XP. I took it over to his house and we took some measurements and stuff. We are going to do some trading, and he has 5 24" sticks of 1.75 .125 dom tubing. I ordered some cage bungs, but they were the old style and not the new style. I see now after searching that most go with .095, and some go with .120. I am worried now that .125 might be too much weight? I know the bungs could be bought for .120 and ground down a little to make them fit, but I can’t find any for .125. Just concerned, as I know nothing about this kind of stuff.