Happy New Year friends! I'm building an AR for my wife (thankfully I got the parts before they were all gone!). She'll be shooting in the 100 to 300 yard range. I've got a 1 - 9 twist 20" Krieger barrel. We'll be sticking with 55 to 62 gr ammo. Target shooting and probaby varment when she's ready. I used an upper with a left side charging handle, so no worries with trying to grab the charging handle under the back of the scope (like on the one I built for myself). The guns already getting a little heavy, so weight may be a little issue, but she'll probably be more bench or stick shooting, so don't let weight be a factor. What optics do you suggest? I'm not going cheap, but $600 may be my upper limit. Thank you in advance.