RE: changing my righthanded bow to a lefthanded bow
I agree with the others. One reason is that it's cheaper to buy a new bow than it is to buy a new riser and cam.
Most cams are specific to right hand or left hand, so you can't just switch on to the other.
You can shoot a right hand bow left handed. My right handed son did this fairly successfully for while until we could save up for a left handed bow.
It's better to shoot the bow that fits you for dominant hand or eye, depending on which is most comfortable for you. However, it is very handy to be able to shoot your bow with either hand.