I’m not familiar with the Engineering college at Berkeley, so I’m sorry I am of no help there. If you send the department and/or a counselor a quick email, they may be able to tell you.
LORs are only accepted for freshmen students, unless you are given a supplementary for a disability/special talent/ etc.
Since you are applying from an out of state (OOS) CC, use assist.org and estimate what classes you need to take.