Pacing Strategy for upcoming half?

Have an upcoming half this weekend. About an 8 week build coming off a 1:46 in sunny/hot conditions in September.

Aggressive target is sub 1:40, expected to be 40 F and cloudy at race time.

Background: -M33, 155 lbs -averaged around 44 mpw (including taper), peak week was 57 miles -did two NSA workouts during the week (8x1k @ 7:30, 4x2k @7:40, 3x3k @7:50 with 1 minute rests) -max HR is estimated around 190-195bpm -one long run every week with HM pace miles (~7:35) thrown in. Longest LR was 15 miles

Key workouts:

1. 15 miles with 3x3 mi @ 7:35 pace w/ 800m rest
2. 14 miles with 3 mi @ 7:35 pace + 3x1mi @ 7:20 w/800m rest
3. 10 miles with 10k @ 7:35 pace

All long runs have built to those three key workouts towards the end of the build

My plan is to go out at 7:40 pace for the first 5 miles, 7:35 for the second 5 miles and see where I’m at the last 5k. Too aggressive, conservative, or just right?