Yes, M6 and V6 are morphs of G2F/M. The starter essentials are just that, the base figures and some clothes. That really should be all you need to start.

Wildernlander is just clothes for G2M. Should work fine with G2M, or any morph there of; M6 or any varient/character morph of G2M. That is the beauty of this new system of DAZ's, practically any clothes will fit any character. As in clothes being sold for a spacific character morph of G2F, sould fit any G2F morph. Same with G2M or genesis for that matter.

I'm not ssure why DAZ does it other then maybe simplicity, but just because the clothes are labeled for a spacific Genesis, G2F/M charcter morph, doesn't mean they wont fit the base figure and any morphs there of.