I was thinking of getting these Chinese characters tattooed from the base of my neck down the middle of my back. I tried to find single characters that represented peace, love, unity and respect or the acronym PLUR.

These characters to the best of my research represent:

[an1] peace/content/calm/still/quiet/to

[ai4] /to love/affection/to be fond of/to like/

[tong] /unity/unify/unite/

[jing4] /to respect/to venerate/to salute/to offer/

I will of course consult someone who is fluent in reading and writing Chinese before I get any of these characters permanently tattooed on my back

Frankie Bones introduced raves (in the underground party sense) ... by throwing a series of big underground parties. They were known as the Storm Raves. Many promoters give Mr. Bones credit as the founding father of raves in America. It was at one of these Storm Raves that Mr. Bones gave a very important speech after one of his very powerful sets. He explained what the scene was about ... Peace, Love, Unity, and Respect. When he finished everybody in the warehouse waved their hands in the air in complete unity. For many it was the most beautiful speech anyone has ever heard ... all the old skoolers still talked about Frankie's speech. They talked about it so much that PLUR became the acronym for Peace, Love, Unity, and Respect.

http://www.plur.com/

Peace:

the calmness you find with those around you, and also inside of yourself. it's tough, we often have to work at it but when you're at peace with others, with ourselves and with our planet only good can come of it. 

Love:

the caring you feel for friends, for strangers, for those in need and also for caring you show for yourself. it's symbiotic, it's about sharing whatever energy you put into something will be returned to you! 

Unity:

this means we all share alot of common things, regardless of our age, gender, race, orientation, whatevah! we are all human beings, we all need other people, & we're all in this for the happiness experienced being around others. though we may have differences, we all arise from the same source. 

Respect:

this may mean respect for others, their ideas, their music, & their lives. it's also respect for one's self: one's body and the needs that it has (food, sleep). educating yourself on the substances you ingest shows love and respect for your body; passing on the knowledge to others shows respect and love for your fellow person.

http://www.hyperreal.org/raves/spirit/plur/Origin_of_PLUR.html