I have assembled all parts for a new Salsa Casseroll build with the exception of a Phil Wood bb since I was unsure which length to get to achieve the best chainline. The Casseroll has 130mm rear spacing and forward-entry horizontal dropouts allowing me to run fixed/ss/ or geared setups. Should I go with the cranks spec'd length of 113mm allowing for possible future use in a geared setup? or is there a better alternative with a decreased q factor?

Here are the drivetrain parts that I am working with:

NOS- Shimano 105 FC-1055 (double) cranks
44T surly chainring
3/32 16T EAI cog
3/32 White Industries freewheel
130mm Paul Comp. high flange hub fixed/free/ Paul lockring

Thanks for any and all help!

Chris