The most common sentiment among people who actually use
these characters in daily life is that kanji
tattoos are bland and uninteresting. "A real tattoo has a deeper meaning; kanji are just words", they say.
If you want one anyway, at least make sure not to use a print font, because that's the equivalent of Helvetica or Times Roman - the pinnacle of blandness. Instead, use a font that looks like it's hand written with a brush.