For "drawers" under a bed, don't use drawer guides; use wheels.
Keep this in mind, too, as you're building your platform supports.
Mattresses plus people plus vigorous activity equals significant stress.
My platform Queen-size bed support is three 2x12s and 3/4" plywood
platform (no drawers).
I got a new California-type female (delivered right to the door). I'm
190, she's 130.
We broke it.
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Maybe I'll just attach one of those stock metal bed frames. The most
important part was assembling the headboard. I've never had a problem
with one of those metal ones..

But now that you mention it, I've busted a couple of the more elaborate
ones (with some help as well)...