I wouldn't bid much higher on that rifle. It's already going to be REALLY heavy, then you're gonna add probably close to a pound to the muzzle.
I built the one above for about $900 and it has all the best parts in an aftermarket receiver with better machining, better finish and a better mount than the Ruger receiver. It has an accurized bolt set for minimum headspace, aftermarket bolt handle, $300 KIDD two stage trigger, Boyd's stock and Clark mid-weight barrel.