Sounds like a DFH 60 Min IPA clone... what a great recipe! Done properly it tastes very similiar.
Sounds like you mimicked "countinual-hopping" with the 5 additions. In a partial boil (< 5 gal) you wont extract nearly enough bitterness (alpha acids) from the Warrior/Simcoe. Malzig is right - if its a REALLY small boil (< 3 gal), all those early additions wont give up their acids - they're just soaking up precious wort.
If you're in between 3-5 gal, double the Warrior at the beginning and keep the rest the same. If your boil is < 3 gal, either invest in hop extract for bitterness or a bigger brewpot.
Isomerized hop extract: http://www.hopunion.com/tetrahydroisomerizedhopextract.html
PS: a few hints on this recipe:
- I believe DFH uses Ringwood yeast (WY 1187) for IPAs. I love it for this recipe, but make a starter. English ale will also give similiar results.
- do more than 5 additions - just split the hop mix up for adds every 2 min, grab a beer, and kick back for an hour while you add.