We are all self taught here, you will find your own workflow as you go along...

What I found was when Ive used it was just leave the setting on default as far as uvs are concerned in zbrush. So you get smooth uvs. So when you return to maya hopefully when the 3 key is applied or the modelled is rendered as a sub d the results should be fine, smooth for smooth so to speak.

Its always best to do the uvs native to the original software and to do them properly. I mentioned auto uv purely because you seemed like a guy in a rush.

With regards to normal map output and displacement map output, we found that in a film production environment that if you were to say have seven levels of subdivision in ZB save a new copy of that file then delete the first 3 levels then output your maps, the maps are then absolutely perfect as they can be. For some reason theres a glitch at the lowest level these days and the maps look bloody awful. They used to say output the maps at base level, so its best to do a high rez base level with all your details....

Jay