I'd split up the willamette hops a bit. I'd also cut the crystal malt, if you can. You need more hops, really, for an IPA, so I'd use more if you have them available. The one ounce hops additions really need to be doubled late in the boil. Forty IBUs isn't enough for an IPA, either, especially with an OG of 1.070. You really need to boost that up to about 55-60 IBUs to have a balanced beer.
If you don't have more cascade and willamette, I'd do this:
Target (60min) (to 40 IBUs just with this addition!)
1 oz cascade (20min)
1 oz willamette (10 min)
1 oz cascade (5 min)
1.4 oz willamette (0 min)
.7 oz cascade (0 min)
Dryhop with willamette/cascade as well.