The Kobra will do everything you need it to, absolutely. They are rock solid, and as tough as anything out there. I also suggest Tantal as the place to buy.
About the only draw back to the Kobra is the fact that it sits up a little high, and there is no way to use a BUIS with the Kobra still mounted to the rail.
Also, take a look at the Tasco ProPoint 3 CMP...they're under $100 at Midway, and have a very bright dot that will not wash out under ANY light...I checked that today by pointing straight up at the bright blue sky today. I could see the dot quite well, and wasn't even at the highest setting.
The ProPoint three will sit much lower on the rifle; you might even want a riser to get it a little higher. No QR mount, though, unless you use a set of ARMS # 22 rings, or an Aimpoint mount. (The Propoint is a 30mm tube, so in theory any 30mm mount should work).
IF you can find a used Aimpoint for $150, jump on it.