No, because hop aroma is also a big part of the IPA experience. If yuo boil them longer, you'll lose that. You could:
Take one of the plugs from that last addition, and move it to an earlier addition, or
Boil one of your earlier additions longer. If there's a 30-minute addition, boil it for 45.
If you've never made the kit before, you might just want to stick with the recipe as is...it's an IPA kit, so it's probably set up to deliver you some IPA-ness.
EDIT: what is the recipe?
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