Kinetic Launcher

So I been asking the leads if I could make a kinetic launcher using the launcher schematics acquired in the "On the spaceship of [tentacle] love" session.  We were not given a whole lot of information about it's stats so I decided to create some to make it a little more defined and see if I can get a more solid answer on if it will be allowed.

Name: Kinetic Launcher

DC to fire: 20

Damage:  15d6 bludgeoning Reflex save of 25 for Half

Area of effect: 40-ft.-radius spread

Crit Range: 20

Range: 10 miles in any direction under Launcher. 10 range increments

Aiming the Launcher: 10 rounds (1 min)

Time from firing to impact: 1d3+2 min

Time to reload: 10 min

Cost of Ammunition: 1,000 Gold

Cost of Launcher: 10,000 Gold

Crew to man Launcher: 1

Mishaps and Misfires: 1

Extra Requirements: Must make a DC 30 geography check or have exact coordinates to properly aim.  Launcher must be in lower orr orbit or higher to fire.

So yeah, this is kind of what a figured the specs for the kinetic launcher might look like.  Just trying to flush it out a bit so it might get approved.  If not oh well.  Thought I might as well ask.