About 11% off MSRP or $5k dealer discount plus the $4200 dealer cash and L&M (tax credits) equivalent to no higher than 1.25%. I think $200 is doable but tough…I don’t know what the inventory is like. More easily is probably $230-$260 like the OP already has. This payment is so low already, we’re really just haggling over $100s of dollars and/or bragging rights.
I haven’t driven the updated ID4, but if it’s within $100/mo of an Optiq, I’d prefer the Optiq: