I will second Yoopers amendments, maybe simplify it even more with a 60/10/0/DH, and add 1 oz. of Simcoe to the dryhop. Your original recipe had 7 oz. total hops anyway. Her revisions left you with 6 oz.
Might want to add the slightly darker extract (Briess Golden DME) late in the boil along with 4 lbs. of the Pilsen LME... use 3 lbs. Pilsen LME at boil start.
And if you want a bit of added dryness, save some DME for a yeast starter and substitute the portion you removed with table or corn sugar, added as a late addition. For extract IPAs, I've found that anywhere from 8-13% sugar helps in a way to prevent stalling out at 1.018-1.020 FG. Other factors matter as well such as yeast health, pitch rate, pre-pitch oxygenation levels, etc.