First off, things to be aware of with white-ink tattoos is that white ink is not a great color to use on its own. It will never look white, and as you know, will often turn condom-yellow or brown. The best case scenario for a white ink tattoo is that it will resemble a scar. If this is the look you are going for, then a white ink tattoo may be suitable for you. White ink does not work well when used in large fields, because the inconsistency of the color as well as the weird colors it can turn are much more obvious. My recommendation for getting lettering in white ink is to keep it simple - a single-pass bolder line weight is best; nothing that would require being filled in. I advise my own clients to not get white ink tattoos, but when they are looking for something simple, understand the limitations and possibilities, and do not have expectations for something that will look like anything other than a scar, I will do them. I have done one on myself as well, with the hopes that it would resemble a scar, and it does. I too am pale, and the tattoo is very subtle (though it is a small tattoo on my finger - a white ink tattoo over a larger area will be more obvious).
As for UV ink - UV ink was created to tag fish. It is composed of carcinogenic materials that are deemed "safe" because these materials are encapsulated in tiny plastic beads...which are being driven into your skin by sharp needles. I would not consider UV ink safe, and would personally never use it on a client, no matter how much they asked. I also do not personally know any reputable artists who use UV ink. (And, realistically, how often do you plan to be under a black light? You're better off getting a tattoo that looks the way you want under normal circumstances, rather than the .002% of your life spent under a black light).
Best of luck!