Almost every mod has a 510 connection, whether it's a hybrid mod, or a mod with a center pin. Therefore, you can use your RDA on any mod that has a 510 connection. The NC has a hybrid 510 connection. However, as mentioned above, you can't lock the fire button, which might be a problem, if you want to keep the mod in your pocket.
If you can't decide, whether to get a series, or parallel mod, you could get a Lucifer clone mod. First of all, it does have the ability, to lock the fire button. Second, you can use it as a series, or a parallel mod, with minor assembly. It has a 510 connection with an adjustable center pin, you would have to adjust accordingly. I bought the following mod a while back, and I really like it a lot.
https://m.fasttech.com/p/3831500