I know you said you dont plan on getting PS plus, but if you're considering Uncharted GA you might as well just get PS plus. You can delete games you aren't interested in or have already completed if space is an issue, and download them again in the future at no cost.
Also you can purchase the free PS plus games and cancel the download to make sure you have it free when they take it out of the rotation of free games. Its clearly the better deal than just buying Uncharted for the same price when you can get Uncharted and a ton of other games for free (Like Ninja Gaiden another game on your list).
Other than that if you prefer JRPG's Persona 4 Golden is a must have, especially if you never played it before. Little Big Planet Vita is another excellent game.
It's a bit embarrising because I have only one game and that's Gravity Rush but I can't bring myself to buy any games when I know that Tearaway and Soul Sacrifice are right around the corner.
I would save for those games too, but I dont like to buy games the first day they come. I prefer to wait a little and check the reviews before purchasing a game.