Rookie Draft - Dynasty Startup

I have the 4th overall pick in a Rookie draft for a start up Dynasty PPR Superflex league and am wondering who should I be targeting. The league had a 10 round vet draft, then a 5 round rookie draft, followed by a 6 round vet draft. Currently my team is as follows:

QB: Dak Prescott, Kirk Cousins

RB: Saquon Barkley, Clyde Edwards Heliare, Damien Harris

WR: Amari Cooper, Chris Godwin, Robert Woods, Jerry Jeudy

TE: Tyler Higbee

I think if Pitts is available, he might be a must have, but my WR are not exceptionally strong and having 3 potential three down backs is enticing while being Superflex, QB’s are the most valuable all while knowing there’s another vet draft the following week.