DIY Cooltube Specs question

So Im looking into constructing a cooltube for a vert setup, 2 600 watt bulbs, and was wondering if clear acrylic tubing, rated for 200 degrees F would hold up to the job. The constant wind tunnel effect should be ample to keep the temps well under this, i would assume. I found a supplier who sells this tubing by the foot, up to 5 foot lengths. 4 inch o.d. with 1/8 inch walls is only about 25 bucks per foot. Any input would be most appreciated.

https://www.rollitup.org/do-yourself/393009-polycarbonate-plexiglass-homemade-cooltube.html#post5044181

All depends on how thin your bulb is. I recommend mounting the socket to a connector at the end of the tube to allow more free flowing of the air. Saw a dope setup once before, but never saved the link. Don't really recommend the acrylic. Might yellow or something. Those things are tricky, Polycarbonate seems pretty legit, but I have only trusted them with CFL so far, so i don't know first hand. If you can find a Pyrex Bread Tube thing, that might work.

I've read up on the bread tube DIY, but my plans are more for a floor to ceiling type tube, housing both bulbs in one peice of tubing. I've even considered heating and rolling a peice of lexan or plexi, and putting the sealed seam toward the doorway so there would be less indiscrepencies in the light quality shining through a thicker area. I have access to some specialty shop equipment, and that would be maybe a few hours of tinkering, but was really looking into a cheap buy. Plexi isnt too cheap where I live, about 100 bucks for a 3 x 6 sheet 1/4 in thick. Thought maybe i may have found something with that acrylic......