Re: planned parts for my build
You might be able to get a used McMillan off the for sale board here with less of a wait time, and may save some money. Unless there is something specific to the Mcmillan line (they make great stuff), you might also check out Manners stocks.
Depending on whether you plan on having anything done to your Remington 700 action (truing, blueprinting and so on) you might want to compare the cost of a ready made action from Defiance Machine, Surgeon, BAT, or similar companies. Some times, the end cost of the action, and machine work exceeds buying a ready made action that is already true to begin with. Plus, you can order any options you might eventually want, and end up saving money in the long run. Again, check the for sale boards here.
Kreiger and similar barrels usually go for around $350. Then you have to pay a smith to thread, chamber and install it. That can easily cost as much as the barrel if you have the muzzle threaded for a brake.
Don't forget to add in the cost of the finish you want on the rifle. Unless you want different colors, or an all stainless rifle, you will want to figure in the cost to have the rifle blued, cerekoted, or painted, tefloned, or finished by some method.
Once you start adding all of this up, it quickly becomes apparent that buying a ready made rifle from McMillan, or GA Precision isn't such a bad deal. Sure, they seem expensive, but if you realistically add up all the costs, they are quite cost effective. But there is much fun in assembling exactly the components you want in the way you want them assembled. It is spendy though...