First of all running Planar or Electrostatic speakers with a 7 Watt SET amp is not the most adviseable thing to do. The MAggies love power and current. I have heard the maggies driven by a 40 Watt Audio Research (CA50) integrated amp, and it sounded OK. HOWEVER, the best I have ever heard the maggies was run my 2 Plinius SA-100 mk3 amps in mono (665wpc into the Maggie 3.6's).
Anyway, I would suggest you look at some sort of sensative 93db+ speaker that is easy to drive to use with the SET. I do not know off the top of my head what these speakers would be... but I do know that Sound Lab and Quads tend to be a heck of a load to drive. Unless you want to get a new amp, you need a speaker that is 6 ohms+ (preferable 8 or 16 ohms) that has a sensativity level of 93db+ (the higher the better). You MIGHT want to try some Vandersteins that have built in subs. I have heard the Vanderstein 5's (they are $10k a pair), and they sounded great. I am not sure what their lower line sounds like. I do know they are not the most sensative speakers in the world; however, if a speakers has built in subs that drive the bass, it tends to be MUCH easier to drive than a traditional speaker.
Have some fun and do some research!