Apart from Rigging and FX ( Biforst, Particles, Mash etc), you can probably get up and started over the weekend.
Price aside, I of course prefer Maya over C4D. On any day.
The only thing that will probably throw you off is how it is designed. Unlike in C4D, where you see everything in object manager, you'd probably check node editor every now and then, mostly in rigging.
If you are stuck on something Maya, hit me a PM. I might be able to point you to a way.
I have the same learning years in Maya and C4D. Roughly 6-7 years. So if you have questions, how to do something like in Maya much the same in C4D. I might be able to answer it, except for MASH (The Mograph) one. I don't deal with that since if its mograph, I use C4D before and now Houdini.