Sweet, thanks Jason!
Seller B is Leeson Solar. they have been the most diligent with follow up (they’re also local and I have had two people i know recommend them, plus around 10 years history in industry).
I have a few new quotes from them:
4kw
11x Longi 370W (LR4-60HPH-370M) + Fronius 4kw ( Primo 4.0-1) = Upfront cost $1,610.38.
Total system cost $7,294.38
14x Longi 370W (LR4-60HPH-370M) + Fronius 4kw ( Primo 4.0-1) = Upfront cost $2,175.54
Total system cost $8,363.54
5kw
14x Longi 370W (LR4-60HPH-370M) + Fronius 5kw ( Primo 5.0-1) = Upfront cost $2,439.13
Total system cost $8,627.13