How should we play AK preflop?

[recallme]

Poker Stars
No Limit Holdem Ring game
Blinds: $10/$20
6 players
Converter

Stack sizes:
hero: $2554
UTG+1: $1950
CO: $2714
Button: $2477
SB: $2137
BB: $1562.90

Pre-flop: (6 players) hero is UTG with K[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/heart.gif[/img]
<font color="#cc0000">hero raises to $70</font>, <font color="#cc0000">UTG+1 raises to $240</font>. , rest folds

This should be just an example of the scenario i am talking about.

Our Villain is a good regular running like 22/17/3.5

His range is (99)/TT+/(AJ)/AQ+ (and some hands to mix it up from him like 76s). I hope this sin`t way off.

Now we have 4 options, from which i dislike only one.

1. Call: bad, we don`t get information and must continue OOP

2. Fold: It doesn`t fit into my aggro style

3. 4bet shove: We fold out all hands, but (JJ)/QQ+ and sometimes even the Q`s. Problem is we are way behind if called

4. 4bet to 700: I like this options most atm, because it lets us get away if Villain has KK+. Problem is we get sometimes pushed by an other Ak or QQ


I would like to know which strategy has the most EV. Perhaps someone has some numbers on it.

How does your action change if it`s CO vs BU?

How does your action change if you are in position?