Hmm . . . I like this table, too, and while velvet chairs are featured with it on West Elm, the fact that you have 2 other velvet seating pieces, I would say no. I think a different texture would bring more depth - perhaps even a leather or pleather option. Here is a link to Houzz' contemporary dining chairs: [https://www.houzz.com/products/contemporary-dining-room-chairs-prbr1-br~t_969~s_2103[(https://www.houzz.com/products/contemporary-dining-room-chairs-prbr1-br~t_969~s_2103)

Three types of seating at one table, especially when there is a patterned rug and molding details is much too busy imo. The bench seating also doesn't allow you to pull it out to sit and push it in be the right distance from the table, so someone is scooting in awkwardly. I think you can use upholstered chairs on the ends, if you have room for it, and different ones on the sides. But from the photo it looks like you don't have room for chairs on either end. The legs of the chairs need to stay on the rug when they are pulled out to sit down. In that case, just use four chairs on each side of the table, and leave the ends open.

Correctly made Windsor chairs are the strongest wood chairs ever made and will take whatever the family can dish out, and go with your decor. There are a lot of poorly made ones, its important to get through-the-seat and bows, bore and wedge construction. Good ones will be around $ 300 to $ 400 apiace. https://www.lawrencecrouse.com/side-chairs/ I have a set of (4) Black Sides in my warehouse if you are in the locat Washington DC region.

Even PB table and chairs will not match exactly because they are not made of the same wood. Maybe you want to consider contrasting the chairs with the table. Chairs are often made of rubberwood, maple or poplar. and not oak or fir.