If you are going to get the Easton bars why not get the Easton ec90 stem to match? Its 110g. The c260 stem is great (I have it on my bike) but its a difference of 6g, but more important TO ME is having a bar and stem should match. Otherwise that would be like wearing Nike shoes with Adidas socks, which is a huge no no.
. Also, if you are gonna do the planet x calipers I would recommend you pay the extra for the cnc. The extra $40 seems questionable but when you/if you get to a point where you trying to tip the scale just under your goal, you're gonna wish you had just pony'd up the dough.