1) Not necessarily. Really, there's at least 3 FPS games - Shadow Warrior, Hard Reset, and Deus Ex. I don't need all of them, but...Shadow Warrior is an old favorite of mine, plus it's 75% off. Eliminating Hard Reset, while it's a couple bucks off my total, isn't enough by itself to bring my total down below $65.
2) No. Dragonfall is a separate item. The version being advertised on Steam is only 50% off, making it more than regular SR Returns. And no, I don't know if it can be played as a standalone game.
3) Yes, it is. But I like the idea of it so much that I'd be willing to throw down the money for it. Plus, as Early Access, I'll get any future updates to the game for free. I see more as 'investment for the future'. Similar to when I bought Wolf Among Us - only half the game was out at that point, but I was willing to take the chance that I would really like the rest of the game, and that what was out was worth the money I spent.
EDIT: In order to bring my total below $65, I need to eliminate one of the following from the list - Shadow Warrior; Invisible, Inc; Deus Ex Human Revolution; Gunpoint Special Edition. Anything else, I'd either need to eliminate more than one thing, or downgrade. I looked into downgrading Gunpoint to the normal game, but that's not enough in an of itself to bring me the money I need.