It will be hard to run your 454 with anything more than a dual coil with the dna30, unless you use 30 guage or something which i never use. The reason for this being that the resistance is cut so much when doing quad coils you will need high guage wire to run it on the dna, if ya had a mech it wouldn't be a problem. Im running my 454 on mechs and my sig 100 watt. The authentic 454 is one of my alltime favorite atties, options for single coil, dual coil and quad coil all with their own airflow. since i see ya only have 8 posts on the forum im going to assume you are fairly new to vaping...in that respect the 454 may be a little tuff for you at first to build on, but there are many good vids on youtube showing how. The cloupor I had decided to go up in smoke 2.5 months after getting it but it was great while it lasted, had to build higher resist than i was used to because I was used to mechs but didnt need to build low because I could just crank up the watts. Basically stayed at 25 30 watts on my rda's and 10-16 on clearos like the nautilus (bvc coils rock btw). In short I think you will love the setup, its a def step up from what ya had before and the kayfun should work better with it also(have more building options with the dna). As for the clone of the 454 im not to sure how the quality is...I saw a quality made, innovative atty made in the us for under 70 and got the authentic. Usually get clones but when I see an authentic for that price I pick it up over the clone cuz I love to support American business but usually cant do to exorbitant prices. With the 454 you can trap neg wire under the ss ring or you can just trap under the screws like I usually do. Also when I do a dual or quad coil I keep two coils on one piece of kanthal(so 2 pieces kanthal total. Basically trap the wire half way thru the length in the pos post and wrap the coils on a screwdriver, then twist the coil vertical. You can see all this online tho, hit me with any specific questions if ya need.