Personally I liked getting the Green Dragon Botanicals capsules that combo'd everything, it was just more practical for me (albeit a bit more expensive than just buying the powders individually).
I herxed, but it wasn't overwhelming. A lot of this stuff is trial and error unfortunately, and sometimes we just don't know until we try. I'd go with your intuition, if starting off one herb at a time appeals to you then I'd go that route. If you want to start off with the combo capsules that can be worth trying too. If it is too much to handle you can always then try going the one herb at a time route.
Timeframes for recovery are always difficult to say. It depends on each individual case. The fact that your symptoms aren't severe and you were bit recently plays in your favor