Which Rhyhorn evo line should I max out and evolve into Rhyperior?

I'm starting to be a big fan of the luckies, honestly id go with the lucky one, for half the stardust those 2 extra points of attack aren't a deal breaker.
Id go lucky first, then possibly the 93 but no rush.
Also we don't have rhyperiors moveset yet so I'd hold on for that.

Your 3085 must be already level 35. Ready to evolve and use as it is. Probably don't need power up further unless specific breakpoints come in the future.

The other has only 12 attack. If you intend to max out that is not likely to be a problem. But I would hold on doing anything with it yet.