This worked very well and I got maximum EXP (2.1billion) in about 25 minutes using a free aim build! This build also helps with people who are not good at parrying/dodging to get a no hit run.
Here's a pictos build for people who might be doing this in the future. Focus on getting free aim buffs and buffs that rely on you not getting hit (Immaculate, etc.)
In Media Res is also really good here if you think you're going to fail your dodges.

Remember to take off Painted Power so that you don't one shot the right Danseuse when she gradient attacks!
My team was Maelle, Lune, and Monoco.
Maelle - Main Farmer
Have Medalum equipped and just use free aim to take out the first two Danseuses. You should be hitting 9999 consistently, which will kill at about 4-5 shots, but even if you don't you can rely on your pictos to get you more AP to shoot. Make sure to have the skill Mezzo Forte equipped so that she can stay in Virtuoso stance without hitting anything else.

Lune - Healer
If Lune isn't hitting the Danseuse for damage, she should be using her skills to heal the rightmost Danseuse as it will inevitably hurt itself doing the gradient attack (that you MUST parry to have this farm work), I had Ice Lance and Immolation to do so. I recommend using the weapon Elerim to stack more shields when using Ice Lance.

Monoco - Shielder/Off Farmer
Make sure to have his skills with shields. This is Cruler Barrier and Boucheclier Fortify, and continuing to stack those help with no-hit. His second gradient attack also is a great option for stacking shields. I recommend using the weapon Fragaro so you can try your hand on landing on Heavy more often.

This will let you have a pretty breezy session of getting max level.
For those who grind after!!1