For training, it is always preferable to beat the (you know) out of someone else's airplane and engine(s) than your own.
Get your private, get 100 or so hours (and your instrument: you are NOT safe without an instrument rating these days), and see if you really like it.
Regarding twins: Twin owner here...I sure like having one. I know the airplane's limitations and know what it can and cannot do on one engine. But it's not for everyone and not for the maintenance faint of heart. Expect to drop big bucks when things go mechanically awry.
SkyHigh is sort of wrong, sort of right when it comes to buying a twin. In fairness, many general aviation twins are equipped with two engines so that one may be used to arrive at the scene of an accident (this is said tongue-in-cheek). They do NOT have the dramatically improved safety record that you would think having twice the powerplants would have. (To be fair to the airplanes, there's nothing wrong with them: there's something wrong with their pilots...and their pilots' training.)