I think it's a very meaningful tattoo and I love it! So ignore those people! If tattoos don't have a lot of meaning to people, they will often regret them.
As for pain level, I have both of my forearms completely tattooed and the wrist is not fun. It's definitely tolerable though. You should be ok.
Some good things to remember though when going in for a tattoo and after, no matter how small:
1. Always always eat before.
2. Bring gatorade/powerade with you to drink. The drink will help you keep hydrated and the sugar will help you not pass out. Our shop also has sugar tablets and suckers on hand for this. The shop you're going to might as well.
3. Breathe! Sounds silly but some people forget, don't breathe, and pass out!
4. You can take ibuprofen after a tattoo to help take the edge off it's bad enough, it will also help with swelling. I know when I got my left forearm completely done, I sat for 8 hours for it and it was very very swollen and painful. Ibuprofen was a lifesaver!
5. Aftercare! Keep it clean and don't use too much lotion. You can use cocoa/shea butter lotion or unscented lotion. Never use things like
A&D ointment or anything petroleum based. It's not good on a fresh tattoo since it will clog pores easily and will pull ink out of the tattoo. The shop you're going to should give you a sheet with instructions on aftercare. But that's just the gist of what we tell clients at our shop.