Congrats and enjoy
I think your salesman gave you good advice - you will be plenty happy with 5.1 especially if you can get it on the side walls instead of the back wall
If you want you can set the Integra up to bi-amp your speakers - meaning that it will split the signal into high and low then output each on a dedicated RCA. Sort of but not really an active crossover. Anyhow if you have enough amps lying around, give it a try - I am pleased with it.
I think your salesman gave you good advice - you will be plenty happy with 5.1 especially if you can get it on the side walls instead of the back wall
If you want you can set the Integra up to bi-amp your speakers - meaning that it will split the signal into high and low then output each on a dedicated RCA. Sort of but not really an active crossover. Anyhow if you have enough amps lying around, give it a try - I am pleased with it.