AKo -- Good Time To Push? or Should I play it out?

[rhizome]

Empire Poker 25+2 No-Limit Hold'em Tourney, Big Blind is t30 (8 handed) converter

UTG+1 (t753)
MP1 (t2665)
MP2 (t1346)
CO (t2055)
Hero (t800)
SB (t4606)
BB (t5500)
UTG (t1710)

Preflop: Hero is Button with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, MP2 calls t30, CO calls t30, Hero ???

Long way to the money-- about 150 left of 250.
The 2 callers have been pretty loose, but everyone at the table had been laying down to any big bet. In this hand, no one has shown any strength. Should I just take what's out there or look to double up?

My thinking:
1. Limp in -- seems weak with most likely the best hand
2. Raise 3x BB -- Would probably drag along the 2 previous callers. Could still still get away from the hand if others called and I missed the flop and others showed some strength.
3. Raise more than 3x BB -- Anything much more is going to commit me to the pot if I get a caller.
4. Push -- If I get no callers, then be happy to have raised my stack more than 10%. If get callers, hope to double up and get back to average. SB &amp; BB would be risking less than 20% of their stacks to call me, so should that make me more cautious?
5. Fold -- not really an option

What is the best option?