RBI CB-70 rack stand

So I will be picking up my cb70 rack from rich at the white plains show in 23 days. It's the 4 tub version, I want to build a stand for the rack to sit on since my reptile room is carpet. The stand is also going to be in wheels. Now do you guys think I should build it now before I get the rack or wait till after I get the rack? If you have made one before can you post some pictures of it. And what size wood did you use
My plan is to make a 34 inch long by 19 inch wide by 3 inch High box with wheels. And possible put some insulation inside the box.
Thanks for the help
Tom

Go to Home Depot and find a 4 x 2 sheet of 1/2 inch or 3/4 inch plywood. Have them cut it to the size you want. Get 4 wheels and screw them in. Set the rack on top. Done.

Did that for my sweater box rack, does the job great. I wanted something a little nicer looking but i will probably do the simple way again.