Are vandersteen 5

Assuming you can put them on the long wall and get them at least 3 ft. from the back wall and 4 ft. from the side walls, and assuming you can sit against the front wall, I think the Vandy 5s would work fine. You would be in an approximately 8 ft. equilateral triangle with the speakers, and this should be an ideal configuration. Are there doors, entryways, fireplaces, or windows that would make this difficult? These speakers are wonderful and any thing you can do to make them work out is highly worth while.

It's possible to put 5's much closer than 3' from the back wall with almost no compromise. You should also mind the size of these speakers that I guess is arround 3.5'deep and will take almost the half of your room space. Theoretically these speakers can perform in any room but I'm sure that there are far more convenient speakers with same or even better performance.

The 5A is 14"W x 20"D at the base and 10"W x 16"D at the top. Height is 45". Quite reasonable considering it includes the sub and amp, a woofer, midrange and tweeter. It is actually narrower and shorter than the 3A, although deeper.