You guys are cracking me up

. I've been very busy with a whole bunch of RL junk... my son wrecked his car last week... making an illegal U-turn and causing a 3 car accident. No one was seriously hurt, and no one was hauled off by ambulance... but we're still getting sued by the other 2 drivers/passengers, because we own his car. Joy. That puts a small damper on my personal hobby enjoyment

. (you did mention off topic

).
I've been reading the informative back and forth with real confusion. Very helpful. What I got so far was this (correct me if mistaken):
I need 2 Sony VT4 2100mAh, AW 1600s, or possibly Orbtronic SX22
For coil build, I should do .4 to .5 ohms at 1/16 air opening for optimal vaping (per pdib), but if I want all day batteries, I should do .6 (per Supertrunk).
For RBA... the toss up is RM2, Cyclone, Cyclops as preferred (everything else requires drilling modifications to make into bottom-feed). There are several others, but they require drilling and the ability to do some modifications. The majority seem to prefer Cyclone.
For fuses, I should ask Pdib for lots of spares (*cough*)
See, I'm paying attention

!