Just me, but, Glacier is a nice polite neutral hop. I would not use them as a FWH addition. For me they do not have the kind of hop sparkle for a FWH. Put them in at 15-10 minutes and see what you can come up with for a FWH.Take 2:
Hop Additions:
1oz Glacier FWH
1.25oz Magnum 60min
2oz Williamette 5min
2oz Cascade 1min
Estimated IBU: 68.12
Yeast:
1056 American
Thoughts?
Others might want to offer differing opinions on Glaciers.
Do not be afraid to bump up the 60 minute Magnum. IMHO 1.25 oz in an AIPA is not enough, especially at your target OG of 1.070. You could go 2 ounces no problem. Magnum are not like most of the other high alpha. Nothing but good basic bitterness to go with all your malt. One of the best beers I ever brewed was an morebeer english IPA kit that used 2 oz magnums @ 60 minutes. It wasn't a hophead beer, it was a properly balanced IPA.
Your program may calculate 68 IBU, but with what you have now, I think it will taste less than 68 IBU.
zymot