What will the enclosure be rated for? NEMA 4 or 3R.
Will you be getting it UL or ETL listed?
Any chance you'll ask Toyota to add your charger to the list of "approved" Rav4 level 2 chargers?
Comparables:
The Toyota approved, NEMA 4, UL listed, 40A Leviton EVSE retails for $899.
ClipperCreek...