Backup QB or stocking depth at WR in 10 team league?

[Cuffs]

Had a draft last night in a 10 team non-ppr standard scoring league (no flex). I picked 8th.

QB: Romo
RB: Chris Johnson / Ryan Matthews / Kevin Smith (bn) / Peyton Hillis (bn)
WR: Steve Smith (Car.) / Percy Harvin / Vincent Jackson / Darius Heyward-Bey (bn) / Michael Crabtree (bn)
TE: Jimmy Graham
D/ST: Texans
K: Matt Prater

The hardest thing about a smaller league like this is there are so many good players out on the waiver wire. I have one open bench spot that I want to fill. The two players I am eyeing are Andrew Luck and Titus Young, det. (LaFell is still out there as well.)

1. I really want Titus Young and the only reason I didn't draft him up front is he creates a bye week issue for me. Should I pick him up as a 6th WR rather than carry a 2nd QB? If something happens to Romo I’d have to make due with whoever else is out there. Currently Luck, Palmer, Freeman, and players of that caliber are there. I can imagine a few of those QBs, especially Luck, being valuable backups from a fantasy perspective. (For such a small league, even Cutler/Schaub/Flacco level players have been drafted.) Once the QB situations shake out I might be left with a Matt Cassel/Blaine Gabbert/Skelton type QB if something happened to Romo down the road.

2. If I should carry a backup QB now, should I take Titus Young now over Crabtree or Heyward-Bey? I rank Heyward-Bey above Crabtree, mainly because Heyward-Bey seems to be in a QB/offense situation more conducive to consistent fantasy points.

WHIR.

[Namaste]

In my most competitive league that's 15 years old, we play 10 teams and I almost always role with 1 QB. You're screwed if you lose your starter, but you'd be screwed and unlikely to win it all even if you had a quality back-up. I'd pick up young and rest easy about it.