RV-12 safety
To date, there have been two RV-12's in existence, both Van's prototypes, and I believe the first one (somewhat different from what's now in production) is now retired and partially dismantled. No customer-built RV-12's have been completed yet. So there really isn't much of a safety record yet, one way or the other, if that's the type of info you're asking for.
But examining the RV-12's specifications and test data, and considering Van's track record, I think the RV-12 will likely prove itself a fun, safe, and commercially successful airplane.
A couple of things you should consider:
1. Get a demo flight at Van's (I assume they're doing them now with the RV-12). See how you click with the airplane.
2. Find a local RV-12 builder and help him for an afternoon. See how you click with the building process. But then again you're in A&P training, so you probably know pretty well what you're getting into for that aspect.
3. Given a well behaved airplane, the most important safety factor is you, the pilot. Good proficiency, good judgment, etc. Take it seriously, always strive to learn more and improve your skills,... have fun and stay safe!