First upgrade since first pen, looking for some help!

I got a Kanger EVOD almost a year ago to help quit smoking, successfully! Looking through the wiki here, the vaping 101, and some other resources, I've been wanting to upgrade my setup. The MVP 3.0 Pro seems like a good choice, and I found what looks like a good deal on a starter kit that includes an iSub G Tank. Since the only thing I've ever purchased after my original EVOD were coils and juice, I'm wondering if there's anything else I'll need to get rolling with this new device? There will be an extra 5x innokin iSub G Replacement coils. Looking around it seems like there's so many little collars and tips and accessories that I dont want to buy this thing only to find out that I'm missing some small part.... Alternatively, if this combo isn't a great buy is there an alternative I should look into? Thanks for the help!