I have to believe you're going to be pleased with that rifle. I do love the .280 (I've had three and still have two). The A-Bolt is a fine rifle that will serve you well.
Sounds like a winner to me. That rifle in .280 W/BOSS should be a really good shooter.
I've got a LH Stainless Stalker W/BOSS in .300 Win. Mag. That rifle just fits me very well. I bought it for Elk but it just fit and shot so good I decided to deer hunt with it awhile. Ended up deer hunting with it over 10 years. Killed a lot whitetails, some very far off, in that time.
I'd like to try one in .280 should be a good one.