This isn't a cash hand but I feel like you guys will be more informed on the topic.

I have been doing some crev work on the following hand;

PokerStars Hand #133437322597: Tournament #1195342976, $1928+$72 USD Hold'em No Limit - Level VII (100/200) - 2015/04/09 0:17:30 WET [2015/04/08 19:17:30 ET]
Table '1195342976 1' 6-max Seat #1 is the button
Seat 1: srxakgirona (6181 in chips)
Seat 3: stevie444 (2819 in chips)
srxakgirona: posts the ante 25
stevie444: posts the ante 25
srxakgirona: posts small blind 100
stevie444: posts big blind 200
* HOLE CARDS
Dealt to stevie444 [2d 8c]
srxakgirona: calls 100
stevie444: checks
FLOP [8h 4s Qs]
stevie444: checks
srxakgirona: bets 200
stevie444: calls 200
TURN [8h 4s Qs] [5h]
stevie444: checks
srxakgirona: bets 600
stevie444: calls 600
RIVER * [8h 4s Qs 5h] [5d]
stevie444: checks
srxakgirona: bets 5156 and is all-in
stevie444:

Assume villain is very good and both pre flop ranges are wide and include many types of hands but sb's is overall slightly stronger. On the flop 1-a is 69%...should we aim to not-fold more, less or equal to this number? Why? On the turn 1-a is 59%...same questions.