Full green compositing good practices (aiming macro)

Hi there,

Now we're about to change our WF to adapt to a new studio spot in which everything's green (except the ceiling), and particularly to take advantage of the ground... It's specifically a corner made of one wall (front), another one (right) and the ground.

So though we have ideas - merging the 3 corresponding shapes to treat them one by one - for the keys, we also think about using a camera solve data export from Mocha to manage the angles of the cam, and therefore replace planes using good geometry.

Do you guys have been doing this and/or have good practice reckonings for it ?
(hope you understood the whole stuff )

Of course, we'd like to make a specific macro out of the best way to achieve it.

Thx in advance