If you want to go the monitor route, you have a number of options open to you. However, you will get basically no bass performance and will need to augment with a subwoofer. I would suggest going to a store and listen to the new B&W Signature 805 with a comparable sub (REL mates well with B&W) and at the same time take a listen to the N802. There is a lot to chose from in the sub $10k range and should be able to find either a great full range speaker or sub/sat for that money.
Keep in mind to get good HT performance you will need a sub with either route that you choose... You will have to make a compromise when trying to choose HT or audio in the same system.
Also, a 600 sq ft room is plenty large to run a full range speaker that won't overload your room.
Keep in mind to get good HT performance you will need a sub with either route that you choose... You will have to make a compromise when trying to choose HT or audio in the same system.
Also, a 600 sq ft room is plenty large to run a full range speaker that won't overload your room.