Goat Cortisol ELISA Kit

I'm a PhD Candidate studying metabolic stress in dairy goats in the peripartum.
In total, 450 samples have to be analysed for each hormone, and analysis will be done in duplicate. Meaning I'll need a number of kits enough to run 900 tests.
Could you please send me a quote specifying the plate size (i.e. 96 well) and the number of free wells per plate. (i.e. 96 well minus the number of wells used for the standard curve).

I have a customer who is looking for Goat Cortisol (COR) ELISA Kit to test with feces samples. Please confirm that the kit is suitable for feces samples.
Per customer request, can you please provide the following information about this kit:
a. Capture antibody or capture antigen – immunogen type, sequence (including species source and accession no. if available), expression host, clonality and host species.
b. Detection antibody (if applicable) - immunogen type, sequence (including species source and accession no. if available), expression host, clonality and host species.
c. Standard – if recombinant protein, please specify sequence (including species source and accession no. if available) and expression host.
d. Please provide your reference data for feces samples. If your lab didn’t test feces, please provide available reference data.
f. Please send the current manual.

I have a question about your product - Goat Cortisol ELISA Kit (CSB-E18048G). I would love to ask about how to set up the blank well in this ELISA Kit. Could you please give me in detail how to prepare the blank well and which solution should be added to make the blank?