Hard-top ideas for 33' center console

Looking to replace the flimsy 1" tube framed canvas top on my center console boat. It has a 3" welded aluminum arch-frame which is rock solid.

Current Setup:

Boat is 9'6" beam
Canvas top covers about 5 feet to the rear of the arch and 3 feet forward.

Questions:
What is best material for this? Span is 9' so not sure how to build.
Would like to extend hardtop total 7' back and 5' forward? Feasable?
Will mount radar, gps antena, and nav lights -how do I route wires inside the top?
Also want some cockpit lights under hardtop...suggestions?

Used boat part lots around that might have this already?

Thanks!

[gonzo]

In the US many outlets have used and discontinued hard tops. A great source is BOATS&HARBORS P.O. Drawer 647 Crossvilee TN 38557-0647