You've got a great set-up there. I went with almost the same set-up.....
I considered the Super Sniper, but the Bushnell was even less expensive. I bought mine for $165 brand new on ebay.
I also considered the same stock you're looking at. The one thing I didn't like about it is that it does not have an adjustable cheek piece. If you go with the B&C stock, get a bolt-on cheek piece. Defensive Edge sells a nice one:
Triggers - the factory trigger on the SPS can be tuned down to about 2.5lbs. That's fine to begin with.
Bipods - go with the Harris. Just be sure you get the swivel head and notched legs. 6-9" or 9-13"...it's up to you. I have both.
Once you have it all together, you should have a great rifle. This summer I have killed groundhogs at 809, 743, 719 and 420. I've shot at them at 900+ and missed them by just a smidge.
You've started down an addictive road and you have already talked yourself into exceeding your original budget for the project. That's a sure sign that you're already addicted and you haven't even pulled the trigger yet.
There's no known cure for this addiction. All you can do is minimize the withdrawal symptoms by shooting more and more.
Have fun and post pics and shooting results when you have them.