Hi,
Current wait time for a new order placed today is probably going to be 1 - 2 months.
Main reason now is that I'm low on screens and pots at the moment. All the remaining parts I have on hand are reserved for the battery vks and my standard VK's that are in progress, so any new orders coming in right now will be waiting on my next batch of parts to come in. The parts order is already placed, but they take a good 20-30 days to come. I've got a lot on the way though, so hopefully this will have me covered for a while.
I don't typically recommend you drive multiple UD's from the same VK, unless you really have a reason for this? While I have demonstrated my high power unit can certainly do this, that unit was not actually made for that purpose, rather, it was made to power a customer's custom high-powered vaporizer, and this was the only way I could really simulate the equivalent load. You can probably drive 2 vapes off a standard VK though, with a 2.5-4A wall adapter.
Not sure if you could make it out in the photo, but I've got a few custom adapters I've made that bring the VK output to banana jacks. That kind of turns it literally into a portable lab supply. The nice thing about the banana plugs is you can just stack them together, so I make a bunch of cables that have a barrel jack on one end and banana jacks on the other, and I can chain as many as I want with ease. I can certainly make you a set of cables like that if you wanted. You'd need a minimum of 3 of such cables to power two vapes, one to go to the vk and another two to chain onto it and go to the vapes.
I think half the fun of having multiple vapes is having them all set at different temperatures, so you start off a bowl with the cooler one, finish it off with the hotter one, and so on. That said, I've almost considered making a "double vk" in one unit for having such a duo kind of setup. Although honestly, for sake of speed, I'd say just get two VKs, for that experience, custom jobs usually take me longer anyway.