I'm a little late seeing this post, but I had to respond because I was facing the same dilemma at one point. I've always worked a job while attending school. In undergrad, I worked two part time jobs, and in grad school, I worked a full-time job. I was also able to complete a published thesis while attending grad school and working full-time. Now, I am attempting to get into law school. I've already taken the LSAT and submitted my application. Trust me, I have heard many people tell me not to work full-time and go to law school. But, many of my current and former co-workers attended law school while they were working full-time. Of course, they were in law school part-time, but it wasn't a problem for them. A lot of dedication and discipline... yes, but a major problem, no. If I am accepted into law school, I will continue to work full-time. I have bills to pay.
Also, I was concerned about my age, because I am not fresh out of undergrad like many people who apply for law school. But after talking to friends/family, I realized if I don't attempt to fulfill my dream of becoming an attorney, it will be the biggest regret of my life. Also, when I took the LSAT, there were people taking the test who were in their 40's and 50's. That made me feel like a spring chicken.
I also know you can take the bar immediately after completing law school, and there is no residency (that only applies to the medical field). I know two good friends, who went to law school, took the bar and passed it right after school, and got jobs in a corporate law firm making six figures. They had to relocate, but they didn't mind. A few of my former co-workers also did the same thing, and they are now working as prosectors, staff attorneys, or public defendants for the court.
I hope this helps. I just wanted you to know that there is someone else who is in your same position. Follow your heart and there will be no regrets.
(Sorry for the long post)