Dude.. Think of it as a pre-order if anything.
It has been said many times in this forum already.
The game will cost the EXACT SAME amount when released and if you buy the EA, you are already paying for the full game before it is released. So if you expect the game to eventually be good (or up to standard) when finally released, there is no difference in whether you buy it at EA or at release. Unless you are short on cash in which case you have over a year to save up for it.
Otherwise, wait 2 years or something for a sale..