Galaxy Note 2 + which tablet combo?

I currently own a Galaxy Note 2 and love it for its great battery life and performance. I also own an outdated iPad 2. Considering updating it to an iPad Mini or 3rd Gen which would add a retina display. I mainly use my tablet for some gaming, reading on kindle app, rss feeds & web browsing. My question would be is a 7.9" tablet not necessary considering I have a 5.5" phone or should I stick to a 10" tablet which would be kept mainly at home/school? Anyone in a similar situation?