Zoom, you have not stated whether you want to go AGM or wet cell. For cranking, you are best to upsize to a 31 series as opposed to that 27 XHD whose specs are shy for you with your accessories. I stick with wet cell, and use the commercial truck batteries at less than half the price of the higher quality AGMs. Everybody has their favourite brand, but I am now using Deka (rebadged by NAPA) 31 series, with specs that surpass the opti requirements. If I were ever to go AGM, Northstar would be my first choice with their four year warranty. You can still get a PM 1, but not at Sears (Odyssey 31M- PC 2150).
