Need a little more info. on the use you intend for your "build". Lightweight hunting rig, bench rest, tactical, etc.?

I've done two builds, one on a Stevens action. My suggestion is to collect the parts over time, watch for sales (I saved on a Midway sale of Timney triggers). Not nearly as painful if you don't try to do it all at once. $300 is not too much for a donor Stevens.

Good Luck.