I know VG is thicker than PG, is using 100% VG going to be a problem in the boge cartos I'm getting for my Revolution 2.1 that i ordered, I have about 350 ML in various flavors, just don't want to have to buy more liquid.

I use 100% VG and most of my carto's last well over a week. I have gone to direct dripping now, at least until I get a feeder, but that is more convenience than anything else. After a week the flavour will taper off, but I usually then clean and off I go again.
The first fill I would let soak for a while, but after that if you fill using the condom method it is pretty easy.