Don,
Heres a few more links to help plan your trip. I'm not sure about the time needed to circumnavigate the island, as I have never done or looked into it. I would probably just find a nice place to camp at and fish and relax, so I'm no help,LOL.
Heres a few that may be helpful:
http://www.catalinainfo.com/Activitys.html
http://www.catalina.com/CIX.html
http://www.visitcatalinaisland.com/t...i_kayaking.php
http://www.ecatalina.com/see_do_ky.cfm
http://www.visitcatalinaisland.com/avalon/Camping.php
http://www.southwindkayaks.com/library/catalina2.html
The link above to Southwind Kayaks page is worth a read. At the bottom of the page, it has contact numbers for the islands Visitor Information Center, and the Chamber of Commerce which should be able to provide all contact information for businesses on the island and maybe others also. Hope this helps a bit and gives you some stuff to read. Talk to you soon,
Perry