CPP has an outstanding CIS program. Not sure why you’d want to leave.
According to this: http://www.cob.calpoly.edu/undergraduate/ SLO does offer and IS concentration in their College of Biz. Transferring will be all but impossible as they don’t take many transfers and heavily favor their ‘Local’ CCs for admission. Apply anyhow and see what happens.
Use http://www.assist.org/web-assist/welcome.html to help map your courses.
Good luck.