The room size is a bit of a problem, but you are wise in not wanting to lock into speaker selection based on the room. I do think it is essential that you choose the speakers first and work from there in assembling the rest of the system.
There are speakers that are known for their ability to do well in long wall close to the wall applications. Having only 8' to work with is going to be tough, but I have heard Wilson Sophia III's in a room not much bigger and they did really well. Another speaker you might consider for less money is the Dali Helicon 400's. They also do well close to the wall and in fact are designed for that purpose. I don't know if the Euphonia MS4's would be similar in that regard.
There are speakers that are known for their ability to do well in long wall close to the wall applications. Having only 8' to work with is going to be tough, but I have heard Wilson Sophia III's in a room not much bigger and they did really well. Another speaker you might consider for less money is the Dali Helicon 400's. They also do well close to the wall and in fact are designed for that purpose. I don't know if the Euphonia MS4's would be similar in that regard.