IMO,as a drood, you will make a pretty good profit by skinning/herbalism, speaking out of experience b^_^d I had plenty for my mount at 40 and 60 for my epic.
Aquatic form will defenitely give you a big boost to herb stranglekelp which always sold on my server. I'll recommend you do circuits at ratchet and work your way up along the coast and back. Before you know you have 2 stacks easily! They tend to respawn at a reasonable rate so you should do okay. Being a stea..I mean Tauren gave me the 15% bonus herbalism which came very handy.
Skinning worked out great for me as well, even in OL. Best place has to be Nagrand for the preciiiiousss clefthoof leather which sells really well, which will help you to save for your flying mounts.
Once you get flying form at 68.....forget about it, you're in business! Unfortunately for me, I'm still working my way to my epic flight form T.T Hope this helps ^_^