Nightmare

Let it be your the worst nightmare.

Here's something inexpensive to try: I have a single Argent Room Lens between my speakers, about 18" from the rear wall. This widens and deepens my soundstage by a great deal. The best news is that if you are capable of fixing a bent fly swatter, you can make your own. Wherever in the world you live, you have access to 2" PVC tubing in 10' lengths (maybe 50MM X 3 metres). Complete building info is on Audio Asylum. Also check out Argent's web site for more info. These things really work.

Amal,you might want to consider Allison Acoustics Model 3,
these speakers are made to work in corners and give flat response and a good stereo image.See link below
http://www.allisonacoustics.com/three.html

A few options. First, since Martin Logans have such a narrow horizonotal dispersion, you can probably get pretty close to side walls if you are toeing in. Maybe not right up against it, but maybe a foot off. With a 16' room length, you can keep them well out from the rear wall. Might work out well.

Second, you can try setting up along the long wall. Might work.

Amal, seven years ago my Wife and I bought a really nice home and she banished my 'screening room' to the smallest bedroom. Since it needed my stereo system, that went too.

Now, all of the guests---especially the kids---all run up to 'my room' and, small as it is, it is the true center of the house and the place to be.

This bugs the s*it out of my wife as it is too cramped and she hates sitting up there but even more hates being left out.

We will soon be putting an addition and she has suggested a hole in the wall coming from the to-be-added library leading into the living room through which my High Definition Projector can deliver the full picture onto the pull-down screen located....in the living room where those really neat speakers I just bought can be placed.......

Be clever, and remember: if you make your room 'the best' it will be moved to the space she is most comfortable in.