Also I'm shooting for 60-70 IBUs, any opinions on a hop schedule? Thanks, Mike.
Lots of ways to go here, depending on what you're after. I don't have software here to calculate so it's a WAG IBU-wise :
1 oz Columbus - 60 min
1 oz each Cascade, Centennial, Mosaic, Columbus - 10 min
1 oz each Cascade, Centennial,Mosaic, Columbus - added after you cool the wort to 180F, steeped for 30 - 45 minutes.
1 oz each of the 4 hops - dry hopped for 7 days.
It would be good as is, but since Columbus and Mosaic are stronger hops than the other two, flavors and aromas would be weighted toward the stronger ones. So you could back off a bit on the Columbus and Mosaic, adding a bit more Cascade and Centennial and have something more balanced across those four hops. Lots of room to experiment. Cheers !