I currently am running SRAM Apex (11-32 cassette, bar end shifters) on my rig for commuting, brisk rides and light touring. A friend and I are planning a loaded tour over the mountains in Montana and I don't think the double crankset will pull the trailer up a mountain. I'm wondering if the SRAM Apex 10sp is compatible with the mtb components. I would like to get away with purchasing a triple crankset and front derailleur if possible.

Barring that, any other recommendations?