Programming an MSD Digital E-Curve Pro Billet Distributor?

Can anyone recommend the best advance curves, mechanical and vacuum, to program an MSD Digital E-Curve Pro Billet Distributor? It’s in a 340 with 10.5 compression, 268°/.464” Comp cam, Eddy heads, 600 Eddy carb., headers. Right now it runs good with around 15° initial, 20° centrifugal starting at around 1000 RPM, all in by 3000 RPM. So I’m thinking "Curve F" , but I don’t know where to set the vacuum. Here are the available curves:

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