I'd probably put the no-Edge limit at second level, not at first.
I could see that. It feels a little bit odd that you get
x karma for the first point, which has a list of disadvantages, then you get another
x karma for the second point, which comes with all the same disadvantages plus this big extra one in the form of no Edge. But maybe I'm overthinking it.
With all these negatives, maybe 3-karma-per-point is a little low though?
And of course no stacking with other Edge-restricting negative qualities, so if Impaired Charisma is allowed, no combining with Uncouth.
Ah! I didn't think of that, but I see this is not your first horsey-lasso-capture thing.