You are going to have trouble getting a custom built for 2000-2500, most actions are in the 1000-1400$ price range alone. If you already own rem700 you could use you might make that 2500$price point. A barrel is going to be 350-500$+ and because you are wanting a back country rifle you'll want it fluted so it puts it closer to the 500$+, then chambering and mating it to an action is 250-500$ bedding around 180-200$ muzzle break if wanted about 180$+/-, stocks vary from 350-700+$, then trigger, bottom metal, tax. I'd say you are at a minimum of 3000$. Cooper supposedly puts out real nice lighter weight rifles with 1/2" guarantee I think that fall close your price point. Travis at Rbros Rifles is the smith I have the most expierence using. He might not hit your price point but all of his rifles are guaranteed to 1/2" moa at 100 yards or better, come broken in and with full load data. He will also answer any questions you have and will work with you to get the rifle the will meet your expectations and that you will exceed your performance needs. I've taken his heavy longrange hunter over 1900 yards.