A number 5 set of points will work well for a gantlet 'diverging'. Don't skimp on the point length (or the transition length if you do a hinged point) - allow it to flow without a severe kink for good operations. You can (and for reliability should) allow the divergence to be split and make the gantlet like a wye - rather than a straight with angled divergence.
For model purposes, you will want the offset to be about 1.5 times the normal maximum flangeway. However, since you are using an off-the-shelf scale, adapt its designed offset into your construction.
-ed-
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-ed mccamey-
COSLAR RR -
http://www.coslar.us/NMRA Standards and Conformance Department
PROTO & FINE Scale Coordinator
I estimate I have about 5 pounds of coupler springs somewhere in the vicinity of my workbench.