Looks like the correct approach. The only correction I have is that you should define a "default route"  not a default gateway.
I want to separate vlans between two ISPs. I've got 10 vlans on a 6224. I want half of them (group A) to go out one port via the default gateway, and the others (group B) to exit to a separate ISP provider on another port. Group A DHCP is provided internally and router interfaces are defined for Group A vlans. Routing is enabled for Group A vlans. The separate ISP provides DHCP for group B , and has interfaces for the vlans defined on their Cisco. i.e. their Cisco is in the broadcast domain for the group B vlans. My thought is to not define interfaces nor routing for the group B vlans, and assign them to the ISP port. (switchport mode general, allow group B). Would that appear to virtually separate the group A and group B vlans from each other? Thanks, w
split vlans on 6224 between two exits