In a dilema..... Help?

So im in a little dilema at the moment. Currently i have a Mid 2012 13'' baseline macbook pro, the screen size just isn't cutting it and i have the opportunity to sell it. Now here is the tricky bit. Im currently awaiting the release of GTA 5 later this year, but am not willing to pay the suggested $600 for the new Xbox One. There is rumor of a Xbox Mini, a more casual gaming system like the Apple TV, rumoured to be cloud gaming style, something i would buy. Would i be better off....
1) Keeping my macbook pro, buying an external monitor, not knowing if the xbox mini will ever come out.
2) Buy a iMac 21.5 baseline, not knowing if the xbox mini will ever come out and if it does use a capture card/HD PVR or one of those converters that Belkin and Kanex make if they do make one for the 2012/13 imacs.
3) Buy a iMac 21.5 baseline, not knowing if the xbox mini will ever come out and if it does buy a second 21.5 inch screen from Dell.

What do you guys think is the best option, the reason i ask is because it is cheaper for me to sell my macbook pro, upgrade to the 21.5 inch than buying a external monitor, 8gb ram, mouse and a keyboard for the macbook pro. About $200 cheaper. Thanks in advance.

sinphase said:

I highly doubt that an xbox mini will come out. I would go with option one, it seems to be the cheapest and easiest. Make sure to get a monitor you like or that would be compatible with an imac should you choose to get one in the future and run dual monitors.

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The first option is the most expensive because i have to buy the monitor now, with the others, i will only buy a monitor later for the imac if a xbox mini comes out.....

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ssdaytona said:

I'd get the imac 27" with the 675mx. you'll love it for games

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Tad expensive for a 15 year old, but i played with the idea.