If its the mooching rod it'll work with a centerpin. i'm actually using a convergence mooching rod with my centerpin right now. Despite it being a bit heavier than an actual pin rod, its quite comfortable to cast.
If you want to get a baitcasting reel, sure you could use it on the convergence mooching rod in a pinch, but i wouldnt recommend it. It'll be pretty tiring because the butt section (the part of the handle below the reel seat) is quite short and there is no "trigger" on the backside of the reel seat. The trigger makes it a lot more comfortable to cast and fight fish because its a lot more stable in your hand.
Also, when you fish a casting rod the eyelets are facing up, and when you fish a mooching or centerpin rod the eyelets are down. So technically if you were to fight a fish on a mooching rod with a casting reel on it, the rod would be bending in the opposite direction that it was intended to. Im not too sure how crucial that last point is though, just some food for thought.
Id recommend to buy your gear from one of the local tackle shops, Sea Run in coquitlam, Pacific angler in Vancouver, Berrys in Richmond. Theres a couple other ones but those ones come to mind first, consult google to find one close to you. I'd stay clear of army and navy or canadian tire for things like rods/reels. Not that they dont know their stuff, or they wont have the inventory, but you can't guarantee that the guy(s) who are knowledgable about local fishing techniques/gear will be working when you decide to pop in. The staff at the local tackle shops will definitely be able to steer you in the right direction and get you out on the water.