Jones and shipley cylindrical grinder CNC conversion, grinding camshafts, cranks

I am getting ready to embark on converting a very nice jones and shiply grinder that I recently aquired for a steal $400 USD, to linux cnc. Now the place where I could use some help from the gurus off mathmatics here. 

I want to be able to use it to grind camshafts, and crankshafts, but I think eccentric turning hal components can probably be tweaked for crankshafts. I am curious how I would 

1. generate g code for the camshaft but I suppose I could use a 2d tool paths with a end mill to generate tool tip positions, around the Z axis with x & y coordinates, the only issue is the grinder will only have z and X like a lathe. 

2. design considerations during the retrofit fit. I am thinking a servo for the z axis to control position along z in a rotary C axis fashion for grinding camshafts as indexing will be important. 

I have 3 good yaskawa AC servos packs and servos out of a hurco I tore down for parts, balls screws and mechanical tidbits for days, the hardpart is trying to figure out how to grind the camshaft lobes.  

open to suggestions if anyone has done anything similar before. 

Looks like i can use A axis rotary moves with the grinder spindle on Z with A being aligned on Y to create Gcodr 

Seems more of a cam problem than a problem for the machine controller?

yeah, the big issue is generating tool paths. I have been working on it and I feel like I might have gotten somewhere with it.  It would be nice if there was a way to upload the lobe geometery and then pick the camshaft lobe arrangement by engine type and then hit grind. That's more of a UI side issue i suspect. 

It seems a lot of effort to program any meaningful thing from the start.
It is quite expensive to "rent" a ready programmed solution.

Boils down to the question is it worth it? Pay someone to program it, or (provided one is able to) spend all the time to do it.