In this mock my idea is to trade back from the number 8 spot. I'm going to say to pick 16th, not because I think necissarily whoever picks at that spot would want to trade up but just to throw us somewhere around the middle of the draft. In this they traded their 1st for ours, their 2nd and 4th. I'm not trying to be too accurate, this is just to give an idea of talent we could possibly draft if we traded back and I'm not going to act like I know how many picks a team would give us, but I know some of those draft game sites are completely unrealistic with how many picks a team is willing to give up. Assume that Matt Asiata & Everson Griffen are resigned and Chris Harris was picked up in FA btw..
1st (16) - Ha Ha Clinton Dix, S
2nd (8) - Shayne Skov, MLB
2nd (16) - Adrian Hubbard, OLB
3rd (8) - Jimmy Garropolo, QB
3rd (32) - Daniel McCullers, NT
4th (8) - Xavier Su'a-Filo, G
4th (16) - Pierre Desir, CB
5th (8) - Jon Halapio, G
6th - L'Damian Washington, WR (Assuming he's still available I say they trade their 7th round pick to go to the top of the 6th and grab him. Like what I saw from this huge guy in the games against South Carolina & Texas A&M)
I'd say with the undrafted free agents they should take players that slipped because either are from small schools or viewed as having off-field issues. I'd grab the obvious, like an extra DE or two, another couple CBs, another QB (maybe that guy from Wyoming) and more OL players. The dream is to bulk up the O-line and win those battles in the trenches.