I would not buy there. They don't even list the ohms.
I don't know - it's beyond me. People claim all kinds of miracles from those dual coils. You can try it. I would be surprised.
These people are using pretty low cartos on 6v
http://www.e-cigarette-forum.com/fo...ssion/212476-recommend-me-cartomizers-6v.html
Another thread
http://www.e-cigarette-forum.com/fo...-discussion/181271-cartomizers-6v-vaping.html
More info on using the dual coils on 6v
Dual-coil Cartomizer
Actually - the 1.5 dual coils are two 3ohm coils so you have to think of them as 3ohm cartos - they draw too much power to be used on slim batteries, but won't burn stuff the way a single 1.5 coil would.
Sounds doable I guess based on those things though I think the 2.5ohm dual coils (2 5ohm coils?) would be easier to make work for you so if you have trouble with the 1.5's try the 2.5's.
My carto tips - the carto has to stay damp everywhere. That means the juice has to be able to flow and they have to be well-filled to start with (18-24 drops of juice per ml of capacity) then allowed to settle so every bit of stuffing gets damp (I lay the carto on different sides for 15-20 min with thin juices). Then you need to keep it damp. I now only use juices with 20% or less VG in cartos. Some people say they can use thick 100% VG in dual coils. If I was you I would practice with thinner juices first.
Some people have tricks fro filling those dual coils. I don't use them so I don't know.