I just wanted to say thank you to everyone who posted suggestions in this thread- I can only vape VG, and 6mg nic is a little high for me (the smallest number on most drop down menus), so this thread has been very helpful.
I have been considering ordering from VapeDudes- they have a nice selection of organic e-liquids, and while they use the standard drop-down menus, the FAQ on their site says one can request alternate pg/vg combos or nic levels.
Virgin Vapors offers custom flavors, and last I heard they can customize pg/vg ratios- I would imagine this also holds true for nic level. I also highly recommend her absolute virgin line- quite expensive, but also incredibly pure and real flavors.