Hi Andrea
You are correct in what you say about the drums, I sometimes leave the bass along with the accompaniment and record the drums in stereo, depends on the song.
The monitors are nEar 4 by ESI I've had them quite a while they give a good response, I just feel at times they can tend to be a touch heavy on the bass.
A couple of other points about the Zoom I didn't mention, you can record up to 16 tracks by over dubbing. The Zoom also has a very comprehensive suite of effects,even a dedicated range of Guitar effects.
I normally record the vocals using insert effects which are applied on the fly and not burnt into the wave file I then apply the effects using Cubase.
If you wish you can also create any number of master's using the Zoom itself which includes the on board effects, the choice is yours.
There are so many different ways to use the Zoom it's really up to you, I would recommend it either for quick recordings or serious multi-tracking. I think it's the nearest thing to a full studio for a sensible outlay.
In this example of "Lyin Eye's" I used 7 tracks, the lead vocal separate, I also recorded the song with the harmony on all the time then used the automation in Cubase to bring the harmony in when required, cheating I know but what the he..
https://app.box.com/s/ruoo5k6xbortwjvc2s88Regards
Col