@incogneato Some UC’s do offer applications for the Spring. UCI, for example, does - but not for Engineering transfers.
http://www.admissions.uci.edu/applicants/transfer_spring2016app.html
I think UCM does too, and maybe Davis, but don’t quote me on those.
@theKwekster I highly recommend taking two summer sessions (one before the first Fall semester), if you’re committed to transferring in two years. That way, you can have a slightly more lenient schedule. Also, for your first semester, I recommend just taking the first 3 courses if possible - those 3 courses alone will be difficult for an incoming HS student.
Many engineering transfers take 3 years in CC to maintain a high GPA. You can be seriously burnt out if you try to cram everything into two - but it can be done.