So basically, the bigger the pot, the better results you will have. I would go with something a little deeper at least.
You will be able to prune it to keep it small, but it'll only grow to 4-5ft in a small pot anyway. With the fertilizer I'd definitely wait until it's been established in the new pot, the 3-2-2 wouldn't be my first choice to get early fruits because of the nitrogen but it will help the plant with vigour which is important when it's young. So you kind of have to weigh your options depending on how patient you are :)
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