Help me choose a platform

Hey all, so if you’ve were building a marketplace where sellers of a niche product, let’s say handmade audio speakers, could sell directly to the community (audiophiles) who buys that niche product, which platform would you use? It needs to: - Allow sellers to create ‘stores’ where they list their products. - Allows buyers to purchase said products, and the seller to ship directly to them (we won’t be holding inventory), - Allows us to post content like videos and interviews etc, And, - Allows us to integrate stripe connect for the platform fee (a % of each sale) we charge. Our target audience are pretty young and design conscious, so design is kinda important. I.e we need a fair bit of control over the aesthetic. Should we look at building a custom site and integrating some kind of ecommerce platform? Build directly on an ecommerce platform? Thanks in advance for any tips!