On the contraire, you could always use hide glue for either the top bearers or the bottom.
I think my legs might be a bit long and haven't glued up those double tenons yet, most parts need a shaving or two, and through tenons are still proud.
I've left the feet oversize to account for any floor discrepancies, just for handyness sake really .
I'll definitely have gotten to grips with the shoulder plane, I've only been using it for this project, and glad of the work,as you cant stretch wood.
I haven't firmly decided where I am going to cut mortices for the long strechers, and only then could I decide one way or another...
It might depend on how valuable your shelf height would be, to decide on which of the bearers gets hot hide glue, that's assuming it could be dismantled
Tom