Swifty MCW5002 or Slit Edge blocks will both beat the Maze 4, and they are both pretty reasonable even if they are a bit more $. They are worth it, and worth doing. The White Water and Cascade are even better than the Swifty's or Slit Edge, but even more expensive. Up to u if they are worth going for, but there are none better.
Swifty MCW50 GPU block, it's about the best there is on the market at this time. And it's a low resistence block to help keep your systems flow rate high. Cathar is working on a Cascade GPU design, but I don't think it's ready just yet.
Swifty 600 series pump, will out perform the L30 or Ehiem 1250, again at reasonable costs.
For a rad there is a large single pass core you can get that is from a 69-72 chevy pick up with air. VEry good if you have the room for it. You can find it here;
www.leakycar.com it's rad #2-342. Will take dual 120mm fans side by side. If space is a problem then I'd say get the Pro-core from D-tech customs and the shroud(s) they offer.
Which model of Panaflo fans? High output ones would be best, on a reobus for noise considerations.