AKs in the SB with limpers, level 1

[betgo]

I got this hand from a video. The play of hero and the rationale seemed a little nonstandard, so I thought it would be interesting to discuss.

Level 1 of stuper, original stacks 2K, blinds 10/20. First 3 positions limp. You have AKs in the SB. How much do you raise to? I don't know if anyone here would complete.