It sounds to me that the way you speak of your mini that you will eventually regret selling it. Since you already have an AR I will agree with the suggestions of keep the mini and start an AR build.
Even if the build stretches out over some time you still already have the bases covered and in the long run you will have two ARs and still have the mini.
Even if the build stretches out over some time you still already have the bases covered and in the long run you will have two ARs and still have the mini.