$0.55 NLHE MTT Bounty: $0,55 NLHE MTT Bounty: AKo vs Kc7c

https://www.boomplayer.com/el/24350904_176A7FE315 you think its correct my fold?
Its in the start of the tournament and i dont have many information about opponent

Bet river to 700-800. As played, puke folding as villain doesn't have many bluffs here, especially to this size. We are at the top of our river checking range which blows, but in MTTs we have to make exploitive folds sometimes.