I think you will be fine with the gearing on the Sequoia. You will be amazed at what the lightness will do for you.

For instance, I went from a Bridgestone RB1 (steel, heavy tug boat) with double chain ring up front 38-52 and lowest gear in the back 25 to

the same set up on a Giant TCR (very light carbon).

I rode the colorado tour on the giant - there is no way with all the climbing that I would have been able to do that on my old Bridgestone (would have had to put a compact or triple on it)

I'm thinking tho if you don't have enough gears, you could probably change your rear cassette on the Sequoia to put a lower gear on. Ask your LBS.