I want to purchase a macbook, which has only one firewire port. I know that 5400 RPM hard drive speed is a little slow for recording, so I want the firewire port free for an external hard drive. I also want to buy a TC electronic Konnekt 8, which is a firewire device. I think it's possible to connect my bass to the konnekt 8, and then connect the konnekt 8 to the macbook's audio line in port using an audio cable. Will this yield results as good as just firewire? will there be more lag?