There is one important item to keep in mind. Using a hand pump to fill a PCP can be a real gut-buster, unless you're built like Arnold Schwarzenegger once was. If you're built like he is now, well......
What accuracy would you be satisfied with at 100 yards? I owned a s510 FAC for awhile. Here is a pretty typical 10-shot group at 100 with JSB 18s from the tin (no sorting or prep).