Lvl 72. Flamingos vs flamingos.
This is solo BST heaven -- pure and simple.
I have worked this camp as BST/WHM and as BST/NIN and subbing NIN wins hands down. However, if you don't have the Gaudy Harness +2x Rune Axe combo, I'd go BST/WHM.
Getting to the camp:
First, you'll need Sky access. This means you need to be through Zilart Mission 13. If you have Sky access, you know. If you don't, I suggest
reading about it.
Once you have Sky access and ding 72, head to Sky. As BST/NIN you'll probably want to bring along some silent oils to get through Ro'Maeve. There are EP-VT weapons on the path to the Hall of the Gods. The first time I went, I forgot my oils (wasn't used to subbing NIN) and was able to make it to the Hall of the Gods by using a couple funguar jugs. So it's your call on whether to bring them.
Once you zone into Ru'Aun Gardens you have a ton of options for camp. The zone is broken into 5 major floating islands and 4 smaller ones. You move from major island to major island using blue teleporters. Blue teleporters need to be activated by hitting the nearest pincerstone. It's pretty straightforward once you figure it out.
Also, the zone is pretty symetrical. The island you zone into after your first teleport is the largest island and is 2-fold symetric. The other 4 islands are arranged in a ring and are more or less identical. Each of these island has two sides and each of these sides is a potential lvl 72 BST camp with 6 flamingos. The different islands have small differences like foliage and obstructions. Because of this, I prefer the islands on either side of the large center island. Explore a bit though, and decide for yourself which camp is best for you.
Mob Behavior:
There are 4 types of mobs that you'll run into as you wander to camp: Pots (Sprinklers), Dolls (Groundskeepers), Birds (Flamingos), and Elementals (all types). The pots, elementals and wandering dolls only aggro to magic. Ninjitsu does not aggro them (but using your reraise gorget or reraising will). There are two types of Groundskeepers though, wandering and stationed in blue nooks. The ones in the nooks will aggro by sight. Just stay as far as you can from them and you won't need to be invisible. The flamingos are perfect BST pets/prey. They don't aggro and they don't link.
Strategy:
At 72, you'll see the flamingos pop from EM to T. There are two ways to work this camp, the safe cheap way and the expensive fast way. I started doing the safe cheap way, but am moving to the expensive fast way because it's just so fast.
The safe cheap way involves making sure that at least 2 of the flamingos in a camp are EM. Charm one EM and send it at a T without engaging yourself. Let it work off ~20% of the T's life and then hot swap to the second EM. On this one you'll engage and it'll be easy to get TP for a finishing rampage. Using this route I was getting easy chain 1s and 2s...and a chain 3 if I did a EM vs EM for one of the later fights.
The faster more expensive route involves fighting along side a EM from the get-go. This will require that you use pet food on the toughest mobs (hence the expense). Now, I haven't been a proponent of pet food in the past (I've been of the mindset that I'd rather spend the gil on gear), but now that these levels require so much xp to get through, I've decided that I'm willing to shell out for the faster xp. You'll want 2 EM pets for this one too and you'll want to fight within your pets roaming radius to ensure that you don't lose your EMs. This method is an easy chain 3 and chain 4s are doable if you are able to keep your fights within the roaming radius of the EM bird. The repop rate of the birds is such that you don't have to wait for repops. As long as you keep your two EMs alive and not despawning you can just keep killing the new birds as they repop.
That's about it. Enjoy!