[excession]

Depends on the table texture.

If you select for medium-high VP$iP, low PFR, low average pot tables (passive) then you can run over the table with a LAG 35%/15% style.

If you select for highest pot size that usually means you'll be in 'bear hunt' mode and might end up 18%/5% or sthg..

Also it's going to be easier to play TAG if you are playing 4 tables and easier to LAG it up if you are on just 2...

So are no 'optimal' figures when you can select the type and number of tables before you sit at them.