DBL Doors or sliding door on Media Room

Hi guys
Just a quick question for you guys to see what you think.

I have a 1M opening between my family Room and Rumpus Room (Media Room) which I want to put doors on. The builder (PD) has indicated I can either have 2x520 double doors or a single 820 sliding door (Both flush panel doors IE: Standard oors).

I have told them I do not want to increase the size of the opening as this would reduce wall space for the lounge in the family room. This is why I am looking at smething around the 1m size.

What I am asking would 2x520 doors look to small or would a 820 slider look to small or can I get a bigger slider IE: 920 or 1020 etc

Any advice would be greatly appreciated