Normally, yes... but why?
The Recording Studio already has an XLR input so why the need for the Vocal Studio? The Key Studio adds another usb mic but if you don't need it, why not just get a usb keyboard controller?
The thing with usb (with asio) is that the active device is usually the monitoring device also. This means that if you have all 3 connected, and all have audio outputs, you might have to monitor each individually. M-audio usually makes great drivers for their equipment and I know they can integrate several of their pci card interfaces so that it looks like a single device. But usb devices can be finicky.