it all depends on your progress as a level 70 and your current server economy.
1 : Is there still money to be made selling the cobrahide LW patches on your server? (they sold for 450++ G in the past on mine, now theyre down to 220).
2 : Is there ANY market for crafted LW stuff ? (Too many LW on my server, almost no market for this).
3 : Are you in a guild that can raid or will raid SSC / TK ++ in the future ?
4 : Will you raid kara ?
1 : The patches, if you farm the mats and buy cheap mats from AH, will net you a healthy profit. This totally depends on your own server economy, investigate and profit :)
2&3 : There are some epic BoE items that are very good and somewhat rare like the belt recipe from SSC; belt of deep shadow. If you craft these you can make some money. Same goes for the cobrascale stuff for Kara starters (see 4). Generally LW is next to useless because most of the really good craftable stuff is now outdone by either ZA drops, S3 or the new island badge gear. So if you drop anything i'd say perhaps drop both and get mining and JC to keep the costs low.
4 : If you don't plan on raiding kara, the LW (3 piece) craftable set will be a good option for you. As well as the cobrascale gloves, hood and boots.
It also depends on what you wanna do:
For pure PVP i'd say get enchanting for the enchants on rings + your own mongoose (if you're lucky) and JC because of the +stealth + detection figurine.
For PVE i'd say get herbalism + alchemy for raid pot use. Also the herbing will give you extra income.