The most important thing when playing chords is that it feels comfortable to you so I don't think you'll have any major issues playing A minor that way.

As for your guitar, are you completely new to playing? Reason I ask is that if you are it may just be a case of taking some time until it feels comfortable to you but I would certainly recommend trying out other makes and models as they all feel different so you could we'll find a different model that feels much better in your hands.

Good luck.