I'd like to add some things that I hope are useful.
1. If you have access to an XP buffer, great, if not, do this grind until you hit 18, then spec points in Artiste and get Flush With Success. Now you can buff yourself the rest of the way. I would not waste TCG loot buffs on this because it's so darn fast anyway.
2. Do it on the lightest traffic planet you can, off-peak if possible. Don't sit on Rori when the GCW is rockin' and expect best results. Go to the empty boonies somewhere.
3. You see a ton of error messages flying up the chat window with this script - that's normal. But the message you should NOT see is
You must be playing music or dancing in order to perform a flourish.
If you're seeing this more than once or twice, your zone/planet is too slow - you are missing XP and grinding too slowly, see #2 above.
4.
Don't grind straight to 90! Stop at about 89 and a half levels. (XP keeps coming for a few seconds after you /dump, so give yourself some room.) That way, when you do the Meatlump pre-quests, you are given the CL64-5 mobs instead of CL90-91 elites, and soloing is candy from a baby even for an Ent. When you're all done and ready to switch professions, finish CL90 on your Ent for the master badge.
5. You need to do this outside, but you may find that your flourishes waltz you all over the country. I like to use the roof of a house like a Tat Medium - it keeps you in the playpen and also gives you some privacy.
6. If you want to keep dancing as a Commando or whatever, visit Mustafar while you're an Ent and learn Pei Yi and Calypso from the cantina NPCs. For some reason, you don't forget them when you respec.
7. You can also take advantage of your temporary buffing abilities to grind Pilot while you're an Ent. Profession respecs don't touch your space skill.
Hope this helps your enjoyment a little.