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At 11.7 CR arn't you close to needing more octane?I agree with Dan that if your going to run 93 you want to less timing.

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We are going to run in the engine on pump gas and then do some testing with E85.

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Why even mess with pump gas,just go to E-85 since it's completely different.Going to pump gas is only going to lessen the performance.At your CR I would baseline it with 104/110 then change to E-85 knowing you need to make changes to flow 25%/30% more.With 11.7 CR I would treat it to better fuel and timing for max power.
I admit I'am not well versed on E-85 and suggest you consult with guys like AJ Casini or others but at your CR level running pump gas and less timing will drop power.If you were in the 10.0 CR range you may do that but at around 12.0 CR you can possibly hurt something or have a substancial power loss.