This is the most important detail of all, is it not? You better find out. I suspect the stays are not long, as this bike is intended for singletrack mtb riding, not touring.

Crankset . . . a 94/58 BCD can offer you the super low and high gears. Rings from 20t to 50t. If you want flexibility, don't buy a 4 arm 104/whatever BCD crank . . . limited chainring choice. 94/58 and 110/74 are king here. I personally think tapered cranks are better long term than the revolving door OBB ones. The Sugino XD triple is a fine 110/74 if it fits you. 94/58 cranks are like the TA Carmina, Vega and Surly Mr. Whirly(these have interchangeable spiders) They cost more, but you get what you pay for.

my 2 cents