Better to start with a single coil. With duals it easy to way undershoot the resistance you were aiming for. Could cause a problem with your battery or spring. Also with one coil you don't have to worry about getting coils identical so they are balanced.
edit: What attys do you have that are setup for duals and will fit in the Reo?
I have Phoenix clones V2 & V5 I think and I don't own a Reo yet so I don't know if they'll fit.
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