brand new boards down, then left them once the dumpster was pulled…they fit very nicely in my truck bed!) anyway, the plans is to use them for the top, which would make it 22 inches wide, which is plenty for a work bench. one thing i know i personally don’t want in the top is a “tool tray”. a previous bench had one, and i filled it in with solid lumber within a year. (kept filling up with sawdust and shavings) but that’s my personal choice.
height is somewhat determined by the type of work you will be doing on the bench. you will want it a little lower for mostly 