Stay the course. I'm in kind of the same boat. I had not really lifted in a couple years, instead opting for sandbag/conditioning work in my garage. I recently got back into it and spent one week getting an estimate 1RM to start the program with.
I started with a 90% TM Squat 290, Bench Press 190, Deadlift 325, Military Press 135 based off of my 5RM from that week. Since then Its been 7 weeks, as i finish up my 2nd cycle. Every +set (5+, 3+, and 1+) has been in the 11-15 rep range. The difference in my TM and estimated 1RM, is +90lbs on my squat, +74lbs on bench, +100lbs, and +35lbs on press. (Est 1RM Using Wendler's formula: Squat 399, Bench 279, Deadlift 448, Press 180, current TM: 310, 205, 345, 145).
I was tempted to go for 1RM again and reset my 90% TM but have decided not to. As TM's go up each cycle (+5 for upper body and +10 for lower body) and i get closer to accurate numbers, the reps will come down (as reps come down the estimated 1RM will also be more accurate). This will ensure I don't increase to quickly and cause injury. Remember, one of the tenets of Wendler's program is long term lifting; Staying in the iron game as a lifestyle not a temporary thing between new years and beach season.