Colorado Inflatable Canoe

I am new to this sport. I just purchased this canoe. Questions since there is no really a manual for it. 1.-How much can you inflate the floor and the seats(pressure wise) or it depends on you. 2.- What about the canoe it self? It comes with manometer and it says 1.5 psi. It is hard for the pump to reach that level(electric pump) and it suppose to feel really hard to the touch? I have some wrinkles on the inside walls close to the bow and stern? Advice.

How this canoe rates vs teh sea eagle 340? Is it made out for white water of any level? What about the material? Durable? Thanks for any input.