Hi, 

I received a mitchell 300 pro 7' M spinning combo as a gift for trout fishing. I prefer ultra light for trout, but thought I might break into bass fishing with some spinning gear. Would this be suitable for bank fishing for bass in Northern California? What types of baits can be thrown with from the bank on spinning gear? Also what type and #test of line. Thanks.

You can throw any bass bait on a spinning reel. I would suggest starting out with 10lb mono.

I'd use 20lb braid with a 8lb fluro leader. Start out with a 1/8oz shaky head with a zoom trick worm I gurantee you will catch fish with this anywhere. Don't try to learn to many lures at once instead of mastering one you will just know how to fish each a "little", but this is just my opinion good luck.