Re: Floor Press
I'm hardly an expert, but when I was working through a SS cycle, I subbed floor press for bench press. It's not a perfect sub (restricted ROM is the most immediate problem) but has some decided benefits, not least of which being it's pretty impossible to drop the bar onto your neck (not that many people die from bench pressing, but if you're solo it's nice to know it's basically impossible with the floor press).
I'm not sure whether there is a compelling reason to do floor vs bench press if you have a bench (the real reason I subbed). But if you don't, it seems pretty reasonable.