I know it’s difficult, but if you’re waiting for the version two hub, I would wait to make device selections for those devices that only work with the hub until you can actually buy the hub. That way you’ll have more options and be more up-to-date. It’s also possible that the hub will be sold in starter kits that include some devices.
As far as cameras go, smartthings keeps talking about camera integration, but hasn’t done any yet. The only specific brands that have been mentioned are dropcam and fosmax. that’s no guarantee those integrations will ever get done, of course. Other community members can speak to their current camera experiences.
Regarding zigbee vs zwave, both are mesh protocols. Zigbee overlaps slightly with the Wi-Fi band and old-style cordless phones. Z wave overlaps with old-style baby monitors. I personally tend to use Z wave inside a house because of the potential, although rare, Wi-Fi/zigbee issue. (Mostly I just hate debugging for Wi-Fi interference.)
Outdoors, zigbee tends to be somewhat better in the rain, so most outdoor sensors are zigbee anyway. Zigbee used to have somewhat better battery life, another reason for its use in the outdoor installations, but the new Z wave plus devices have improved their battery draw significantly, so they’re at least even now.
But again, I would wait until hub two was actually available to make end device decisions for any devices you’re not going to deploy immediately. For example, if hub two turns out to be a zwave plus controller, that would give you significantly more range with Zwave plus end devices.
Just my own feeling, but I’m one of those who puts a lot of thought into individual device selection, including in terms of energy efficiency. I was formerly a network engineer, so I like to look at the installation as a whole. And I can’t do that until we have real specs on the second-generation hub.