I have the L80 and Silent Stroke combo as well. The trick is to tune the top head for feel/responsiveness and the (regular) resonant head for the pitch that you want the drum to have. I have played in the garage with my wife directly upstairs taking a nap, so I can attest that they do work great for practicing quietly.
Some tips, though:
If you are in an upstairs apartment, there can be vibrations transmitted to your downstairs neighbors. People with electronic kits have this problem and its a similar deal with mesh heads and quiet cymbals. Any rythmic thumping or bumping (even quiet ones) will get annoying to some people in this situation.
I would recommend Silent Strokes on the toms and kick, and an RTOM Black Hole on the snare. The Black Hole has a rubber rim that you can use for rim shots and cross sticking. It's jarring when you are playing a quiet kit and then do cross sticking that is louder than the whole kit, or when you accidentally hit a rim shot and it's super noisy.