I already commented but after reading the comments it sounds like you are Greek. I already liked it but now I like it even more for you. Like you said you are used to spelling things out. It honors Greece, people who know you will associate it more with that than [name_f]Kimmy[/name_f] Schmidt. Xanthippe is an amazing choice!!
I think sometimes people forget that names are being given to a person, it is their name, not the gift giver’s name. You might like adventurous names and not be concerned about correcting spelling and pronunciation but the person, that will have this name for 70/80+ years might care. I also think of the preschooler or kindergartener learning to write their name and then needing to write it on all their school papers for years to come. I personally would rather have a name that might not be my style but fits in over not my style and over-the-top and/or not fitting many personality types. My name isn’t a name I would have chosen but I’m sure glad it’s just an average name, for lack of better words. I personally do not believe in changing your name because parents put a lot of thought and love into giving you a name but I would have definitely felt much, much more comfortable in doing so if the name was too adventurous.
Here is a bit of information about Xanthippe. Meaning, origin and history of the name Xanthippe - Behind the Name
I had a vague feeling that I had read somewhere that Xanthippe was a nag, but couldn’t remember the details…thanks lovemysweeties for that link. Like many previous posters, for me Xanthippe isn’t something I’d feel comfortable in using, but [name_f]Xanthe[/name_f] is lovely.
I looked it up on this (Nameberry) site…
“You may be interested in an unusual name that fits your ethnic identity, and that’s great, but if people in the country where you live are going to have endless trouble pronouncing or remembering it, you’ve got a problem. [name_f]Xanthipe[/name_f] may be lovely if you live in Athens, but in Athens, [name_f]Georgia[/name_f], you’d do better with [name_f]Cynthia[/name_f].”
Also…
“Why would anyone name a child after [name_m]Socrates[/name_m]’ nagging wife?” 
I adore [name_f]Xanthe[/name_f], but Xanthippe is not nice.
I think Xanthippe is lovely and [name_f]Xanthe[/name_f] an equally lovely nickname, especially given you are Greek. The baby’s first and last names will match. If Xanthippe is too much for the growing child and or future adult, [name_f]Xanthe[/name_f], [name_m]Xan[/name_m], [name_f]Tippi[/name_f], and even [name_f]Sandi[/name_f] would be perfectly acceptable for every day use.
I think Xanthippe is striking, gorgeous and quite amazing. I would love to meet a little one. I love [name_f]Tippi[/name_f] as a nn. [name_f]Xanthe[/name_f] is nice, but just doesn’t have the impact.
Interesting to see a lot of negative feedback about this one. It’s just 3 syllables, has great sounds, and not too hard to get a handle on even if you’ve never seen it before. I put it with my other loves, [name_f]Persephone[/name_f], [name_f]Penelope[/name_f] and [name_f]Calliope[/name_f].
I wish I had a great name like this instead of my very mainstream one (which, by the way, for all those who worry about spelling challenges, I’ve always had to spell out and correct misspellings despite having a very common name spelt in the usual way. At least with a fabulous and different name you would feel like all the spelling out I have to do is justified!)