Acoustic Energy AE1 is very good in near field, you can even place them very close to back wall to reinforce bass. I had the Signature version and it was very sweet.
Dynaudio Craft was designed for near field and against back wall, but Dynaudio in general do not sound good till high volume.
Usher BE-718 can be placed close to back wall, they are near full range and very sweet and extended on top. Your ARC should be able to power them well in that small space. I played my Usher in low volume and it had incredible amount of detail even at low volume.
Dynaudio Craft was designed for near field and against back wall, but Dynaudio in general do not sound good till high volume.
Usher BE-718 can be placed close to back wall, they are near full range and very sweet and extended on top. Your ARC should be able to power them well in that small space. I played my Usher in low volume and it had incredible amount of detail even at low volume.