Thanks for the input, my bike has a compact crank 50/34T so its good up front. I've got some very nice mountain climbs in close proximity(ride from front door) to my house so I'd like to get my bike set up primo for climbing.

Would this Ultegra 10 speed cassette in 12x30 be compatible with my current drivetrain?

Shimano Ultegra 6700 10-Speed Cassette - Cassettes