No Longer Here, BY CHOICE
You can get slabs that size. You can get slabs large enough to make conference tables but they are very pricey.
Id glue it up in sections. If using 6" wide boards, glue them into three panels then glue those three panels into one. Much simpler than trying to deal with all those boards in one glue up. Use cauls and lots of clamps. I dont see any advantage to the biscuits so personally, Id leave them out. After my panel was complete, Id find a mill or cabinet shop or someplace with a large drum sander and have them sand the panel perfectly flat.
RRBrown, knottscott and many others were banned, they didn't just leave. They were banned for standing up to the new owners that are destroying this site. Come join us all at woodworking chat, the best new woodworking site on the net!!