first: Share information! Tell him about how you found vaping and what you started on. Read the new members forum here, there are tons of stories there, paraphrase some of those and share it with him.
Third: If it was my dad I'd drop some money on a few egos (or mvp2) and some decent clearomisers (fasttech and focalecig have great prices but ship from china, so expect a few weeks in shipping, in the US 101vapes has decent prices). If you've got some old egos laying around with some decent clearos, you could start there too.
Second: Before you give him a new setup, take him to a vapor bar. Have him try some different flavors. I'd say try a bit of everything - tobacco, fruit, alcoholic drinks, candy, cerial, whatever. I have an issue with textures.. like when i taste cheese cake, I expect that texture in my mouth. same with cereal. Not true with peaches and cream and such though.. anyway, everyone is different, so just have him try different flavors so he can have an idea of what he likes. get a few 15ml bottles (or less) of a few flavors that knock his socks off. I would get some different flavors instead of a bunch of one flavor because it gives you variety and there have been times where i get through a tank of juice, after loving it in the store, and I find it unvapable. Also, his taste buds will change over the next few months if he does decide to completely quit smoking.
My success has been limited. I've converted my brother in law by sharing my ego with him when we were out drinking. I converted my aunt and uncle to dual users (smoke and vape), but every cigarette they dont smoke is a win! I'm still working on my wifes parents, but I'm not pushing to hard yet... They are pretty stubborn so I'll probably have to kid nap them to get them to go out and try flavors. Plan on buying a setup for them for christmas... I know thats a ways away, but I'm playing the long game XD
I work from home and dont know many smokers anymore. the list above are the only smokers I know, so I've had some decent success. Better than half.. lol
I think your setup would be too powerful for him, and I'd start him off slow with an ego or mvp, with a protank 2 or 3 mini or maybe a nautilus mini.
hth