Youre limited to 15 watts with the vamo so some of the better tanks with alot of airflow and very low ohm coils wont work so well with your vamo 5 unfortunately...Youre limited to about 1.5 ohms with 15 watts.
Just a suggestion and i have this tank myself but maybe try a Kanger protank 2 with a kanger version 3 air flow controller...This controller moves the air intake well above the 510...its not a super dupper airy draw but its miles ahead of the stock 510 breather holes on the stock kanger base.
Coils are cheap and easy to rebuild if you wanted to learn to do it yourself.
Heres my protank 2 with the V3 A.F.C. on my vamo v2...You can see the airflow to the tank is nowhere near the top ring and poses zero air flow restriction.