I'll try to respond in several sections.
1) I cannot speak to the movement of the UCLA waitlist. Sorry. check your PMs.
2) An LL.M. is not a good option if your goal is to use it to cover up an unimpressive JD or shore up your resume. Most employers will not consider you after your LL.M. if they would not have considered you before the LL.M. Tax is an exception, but even then the Tax LL.M. is not a sure way to boost your appeal to employers.
3) UCLA's LLM is a general LLM, though you can concentrate in particular subject areas. You say you would like to pursue a bankruptcy/tax LLM... If so, then you should look at schools that do offer tax LLMs. Your JD school, USD, offers a tax LLM that is in the top-10 for tax llm programs. In LA you can also look at Loyola Law School, which offers another Tax LLM in the top-10. Both of those schools would do far more for you than a general LLM from UCLA. The UCLA LLM just does not carry the same prestige as USD or LLS, and honestly it is a much better idea for someone who does not already hold a domestic JD.
4) If you are struggling finding a job now and looking at an LLM as a way to improve yourself to try again next year, I would suggest that you rethink that. You will probably find that you would be far better suited taking ANY legal job... public service, government, contract attorney, anything. First, you will make a little money. Second, you will develop experience. If you decide that you really DO want to get a tax LLM, then your applications will be stronger for having that experience. And if you decide otherwise, you'll have some practical experience on your resume.
Despite the tone, I'm not saying that you should not get an LLM...I'm just saying that an LLM is not for everyone and many people pursue it for the wrong reasons. Your post just seemed full of the wrong reasons and motivations, so I hope you reconsider your options and make a well-reasoned decision.