New setup

Hi everyone, I'm new to all of this so bear with me please.

I'm working on restoring an old record console. My plan is to start this set up as a 2.1 with future plans to add surround speakers. So I'm looking for a receiver that's capable of handling my future plans.

My house is very open, so overall I'm dealing with a 40'x19' room. I've been into a local store and was recommended the NAD t758 V3, Focal Aria 906, and either the REL T/9i or SVS SB-2000. I loved the sound of the Focal's especially with the REL added. They didn't have an SVS for me to hear. 

I'm curious if this would be a good setup for my room size? Is there is a better receiver for the set up? And given the room size, would I be better to go with two SVS subs since I'm trying to keep this under $4000.