Depends on who is throwing the ball. But if I had to sacrifice somewhere I'd have a top ten line, good qb, and average WRs. Look at Chicago- good qb, good receivers, no OL. No playoffs either. NE with a great OL, 1 good receiver, good qb - playoffs. MIN & WAS both top ten OL in run blocking, decent WR core but nothing special, playoffs.
You're also assuming Austin is going to be Welker with turbo boosters. There is a higher risk for WR busts in first round. Of the last 96 WRs taken in the first round 23 were a bust while only 15 were home runs. For interior OL (Cooper like I'm screaming) of 40 first rounders you only have only 6 busts with 7 home runs. Meanwhile, the best slot receivers in the game were all UDFA.
My point is we can address both of our perceived needs in the same draft, but Austin isn't in that picture due to risk of drafting that position at a high pick.
The obvious reason that C/OG's have a better success rate than WR's drafted in the first round is that only truly elite interior linemen are drafted in the first round, because interior O-linemen don't impact the game the way WR's do. How many of those 1st Round OG's and OT's have rings?
Before the Packers drafted an OT in the 1st, they already had Jennings, Jones, Driver, and Nelson.
Last year's Ravens team had only one O-linemen that the Ravens drafted in the 1st. The other 1st RD draft pick on that O-line was brought in on the cheap and considered finished by most. Here are what the last few SB O-lines have looked like.
Colts:
LT: 1st Round
LG: UDFA
C: UDFA
RG: 5th Round
RT: 4th Round
Giants:
LT: 5th Round
LG: UDFA
C: UDFA
RG: 2nd Round
RT: 3rd Round
Steelers:
LT - 3rd Round
LG - 6th Round
C - 6th Round
RG - UDFA
RT - 4th Round
Saints:
LT - 4th Round
LG - 5th Round
C - 5th Round
RG - 4th Round
RT - 2nd Round
Packers:
LT - 2nd Round
LG - 2nd Round
C - 7th Round
RG - 4th Round
RT - 1st Round
Giants:
LT - 5th Round
LG - 6th Round
C - 2nd Round
RG - 2nd Round
RT - 3rd Round
Ravens:
LT - 1st Round (back in '02, by the Vikings)
LG - 2nd Round
C - 6th Round
RG - 3rd Round
RT - 1st Round
The last SB team to field more than one 1st Round OT that said team drafted was the '05 Steelers. Their LG, C, and RG were all 1st Round picks, but it should be noted that none of them were drafted before pick 23.
So of the last seven SB Champions, there have have been only four 1st Round starters on the O-line. That's 4/35. There were seven 2nd Round O-linemen, four 3rd Round, five 4th Round, five 5th Round, four 6th Round, one 7th Round, and five UDFA's. So:
1st: 4
2nd: 7
3rd: 4
4th: 5
5th: 5
6th: 4
7th: 1
UDFA: 5
Looking at WR's from these same teams:
Colts:
WR: 1st
WR: 1st
Giants:
WR: 1st
WR: 2nd
Steelers:
WR: 1st
WR: 3rd
Saints:
WR: 7th
WR: 2nd
Packers:
WR: 2nd
WR: 2nd
Giants:
WR: 1st
WR: UDFA
Ravens:
WR: 2nd
WR: 2nd
Of the 14 starting WR's of the last seven SB winners, five were 1st Rounders, six were 2nd Rounders, one was a 3rd Rounder, one was a 7th, and one was a UDFA. So:
1st: 5
2nd: 6
3rd: 1
4th: n/a
5th: n/a
6th: n/a
7th: 1
UDFA: 1