Hi there and welcome to the Cafe - great to see a new face 'round these parts!
Is this a PPR league? If it is, then I like Sproles as RB2. If not, then I'd roll with Bradshaw (who's a close second even in PPR). As for WR, I think it's pretty clear cut. Austin is for sure from what I've read/seen, so Smith is a lock. Plax is far too risky to start when you have someone like Henderson, who has a relatively low floor but a huge ceiling with Colston still out in NO. So, start your NFC South guys with confidence in PPR. If it's non-PPR then sub Bradshaw for Sproles