To enter recovery: keep pressing back button or volume- button.
Status 7 is when you used rom which is for neo, not neo v right?
It's nothing wrong with SE phones, they are just different than samsung, in some things, but still, if you use right files, there will be no problem.
Since you have no intention to stay on root-ed stock rom, but instead go to custom rom, we are a bit off topic in here, so you will get better answers if you continue discussion in the thread of rom you are trying to install