Re: First track experience for me and the WRX
You shouldn't need to hit 4th. I took my car the the strip for the first time last week (slips when I get the scanner working) and I hit my rev limiter shortly after finishing the line. You want to hold the gears as long as possible because whenever you up-shift you're essentially throwing away a torque multiple, not to mention that it takes a fraction of a second to do the shift itself.
Like the others said, work on your 60' times. You should be able to get into the 1.9 range in stock trim. Other than that, hold 1st and 2nd as LONG as possible. They're your power gears, use them. If everything goes right, you SHOULD be able to reach mid 14s.
As for my runs. I did a 15.1 @ 93mph (held 3rd to the end) and a 15.0 @ 83mph (missed 4th, BIG BIG mistake even reaching for it)