restoring original steering wheel

My 70 Duster has the original steering wheel, complete with the usual cracks around the outside rim. I was thinking of filling the cracks with body filler, sanding, sealing with ?, and spraying it with a rubber/vinyl/plastic friendly paint.

I haven't done this before and would appreciate any tips. Thanks.
I did mine with PC-7 epoxy. came out well. I used auto primer and 2 part auto paint to finish it up though not rattle can paint,

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