My tip for reverb is start with it off, then gently bring it up until you can just hear its effect, then back it off one click.
This is unless you want that full on reverb.
One other thing I use a lot is an individual reverb on each voice where you balance the wet/dry mix just to get the voice/instrument to sound right, many synths or amps have built in reverb. Then I have a Bus Reverb, which is set 100% Wet, 0% Dry, simple room or plate reverb. This is then sent from sends for each track, adjusted as described above. This reverb then sets everything in the same acoustic space. The send levels might well be very low i.e. only -40dB but adjust to taste.
Happy tweaking.