Nah. I don't ship it. I don't like, crazy hate it like I do other ships *cough* Percico *cough*. Anyway, reasons I don't ship it.
1. Rachel is the oracle of Delphi. So she is a maiden.
2. Percabeth
3. They are friends, but nothing more anymore. Yes Rachel used to have a crush on Percy, but not anymore.
Brotp. Not OTP