Exactly as I did it. And you can cover a pair of vents to get a mid-vent. Still only have the std and the full vent. But on the other hand, it might not be your way since you seem always have some minimum wind. And if close zero wind happens at some rare occasion, perhaps you have another (non quad) kite for that time?
This was really a good feature of my B-series. If they wouldn't have been included I'd still not (knowing myself) would have access to 2 and 4 wrap spars. This has given me the possibility to work on sail loading and controlling the flex. If you are past the panicking and pulling the lines hard close to the ground don't fear breaking the 2 wrap spars. I can much recommend to get frames to be able to meet various wind conditions. You want to be able to curve the LE by pulling the handles to create forward drive. A constantly curved LE in too hard wind or a too stiff LE in light wind that you cannot curve is equally bad. There are some discussions here on other (cheaper and more expensive) spars which I also need to learn more from.
Don't know. I picked stuff up here and there on the forum... The process was nice though a bit slow, e.g. I was long confused about long leaders - thought you put them in series with the existing one on the handle... The videos are good though, also for terminology..
So Sweden and nearby countries also seems to be full of them. If I would have known any kiter in Finland I could have gone there on a cheap nice large ferry boat trip (the ferries instead make their living much on tax free and food), but as we all know there is no Finland, https://skeptoid.com/episodes/4573 .
I daily see hoards of kiters here that I can exchange valuable information with. Likewise I get valuable experience before purchases by testing their gear ...No, I've not seen any non beginner multi line (DLK and QLK) pilot during this millennium with the exception of power foils. The only two framed quads that I've ever seen are my own. Perhaps the situation is different on the Swedish west coast?