So two things, even though I think it’s a bit premature to think about this. Number one, “forensic psychology” isn’t really a subfield of psychology. What I mean by that is most forensic psychologists actually have a PhD in a different subfield of psychology (like clinical, counseling, or school especially, but occasionally another one) but their main area of practice is law/forensics. Secondly, it’s not necessarily best for a forensic psychologist to partner with a specific law firm for clients; some forensic psychologists work for the police or another government agency; others are in private practice and may have referral relationships with several law firms or agencies. That said, I’m not sure any networking and connections you created as an undergrad with the law school would be useful to you in your future career anyway.
In any event, undergrad psychology departments typically aren’t ranked. Most strong schools will also have a strong psychology department. Boston U and Clark U are two universities that have been referenced that have strong psych departments. Rutgers has a pretty good psychology program, as does TCNJ. What are you looking for in a university/college other than location? There are a lot of good schools with good psych departments within a 4-hour radius of you.