Note that you can only capture [skill level] amount of traps, so depending on how you utilise it you need Rogues 2 and possibly 3.
Apart from that, Capture’s cooldown is 180s, which is long to use it effectively (cooldown only starts when you release skills).
As for which skills I would pick (considering only my own skills, not team mate’s capturable skills), in this order:
Arrow Sprinkler -> Throw Gu Pot -> Broom Trap -> Flare Shot.
Going just these skills would require Archer 2 Sapper 2 Wugu 2 Rogue 1 Mergen 1, and it’ll still miss out on Flare Shot.
Ideally, we would want Capture’s cooldown to be reduced dramatically first before all else.