You're welcome. Paint-wise we really need to know what the building material is going to be to give you a solid answer. FYI, if you use 3/4" wood (MDF or plywood), leave the 2x4 boards out of the construction. They are unnecessary and will take up valuable real estate inside the stand itself.
If you paint plywood be prepared for a lot of prep work (not talking sanding here). Many coats of sealer are needed to not have the grain show through the primer/paint. Assuming you want a smooth uniform finish.