Up to you if you can wait or not. You can still buy and play early, and sell it later if you want to upgrade. Or wait until it's out and play all the games later.
I'm buying it as well, there is no doubt about it now. All the gameplay really help me decide if it's worth it or not. Think it's really worth it, gameplay wise.

finally finish the game @ 23 hour     

Beli, settle main, jual. 
Or wait for sale next time