I use a 2/3 Bodyglove wetsuit that I got at Big 5 for around $100. It's a full body one. I use a wetsuit (and sometimes fold the top down) on warm summer days but in colder water (less than 60 F) or at night I'll use waders.

The waders I use are Hogeman stocking foot and go for around $60 (Sportmart in Goleta had them a while ago) but I'd also recommend getting a pair of diving booties 2 sizes larger than your foot size to go over the stocking foot (between the waders and fins) or you'll be patching holes in the feet rather soon.

I don't know much about the areas you are describing but for tubing information and fishing information I recommend you check out:

http://www.calfishing.com/tubing/index.html

http://www.calfishing.com/saltwater/halibut/index.html

http://leapinbass.com/fishing/tubing.htm

http://swimbait.com/halibut

http://swimbait.com/combat