so i was just wondering of all the new guys for LSU (meaning redshirt freshmen true freshmen or transfers) who will have the biggest impact

here's a few likely names:

Jarrett Fobbs WR
Kadron Boone WR
James Wright WR
Spenser Ware RB
Mike Ford RB
Alfred Blue RB
Jakori Gore RB
Ken Adams DE
Barkevious Mingo DE
Sam Mongomery DE
Craig loston FS

I believe Ford will have the biggest impact but many people here have a huge chance to contribute

About half those players are true freshmen and barring injury wont see the field this fall.
Of the rest Ford, Mingo, Montgomery and Loston are names you'll be hearing a lot.

Kadron Boone is a true freshman that has a chance to get some PT. Most will redshirt. Ford, Adams, Mingo, Montgomery, Loston all have an impact this season.