Remember that Gobert brought back 4 1st rounders. Heck, even a washed James Harden brought back 2 first round picks and a swap.
I wouldn't want the Jazz to send 5 first rounders, but if they could get Booker for Sexton, Salary cap filler and 3 firsts? Yeah, I think I'd do that. Not sure the Suns would, though.