The biggest issue will be your ceiling height. At 7 feet, it will be the limiting factor. I mean, with 30 feet deep, it will be really, really long if it is a dedicated space. You have enough depth for about 3 rows of seats, LOL. Unfortunately you would be hard pressed to get a 2nd row in there with a tall enough riser to see of the front row heads without the height being a factor.
But, think creatively and you may find a super solution that works great.
Maybe 1 row of comfy seats, and a second row with a countertop and bar-stool setup. Then you can skip the riser and the height isn't an issue. The bar stools would need to be as comfortable as possible too, but it is an option. Or just split the dedicated space in two and have one row of seats and a 7'x10'x15' space and another similar sized space and make a game room or something.
