It sounds to me that they are showing you they love you and and are concerned. That doesn't mean they don't support the idea of you moving out. They are just trying to point out some things that you might not have thought about. It sounds like you've worked out a plan. Let them know you've listened to their worries and you have a plan. Then, follow your heart. They will take their cue from you. If you are happy in your new place, they will be happy for you.