You'd have to gross $25/hour on average to get $1000 in 40 hours
I just went over my numbers since I started in January. I'm averaging $18.73/hr. The BEST week I ever had, I averaged $23.57/hr. And that was with good quests and surge.
I'm sure there are those who average more per hour than I. But if San Antonio is anything like Dallas and you're only driving UberX, I wouldn't count on $1,000/wk.
Then again, the lower cost of living means you don't have to earn the same amount as you do in Seattle.