Do I have enough folding equity here?

***** Hand History for Game 3593266321 *****
$25 NL Texas Hold'em - Monday, February 20, 21:08:28 ET 2006
Table Sandbag (Real Money)
Seat 5 is the button
Total number of players : 10
Seat 1: modawg3434 ( $22.78 )
Seat 3: JQdaBalla ( $25.05 )
Seat 4: mattie_t20 ( $27.79 )
Seat 6: spuds53538 ( $8.75 )
Seat 10: teeba420 ( $57.30 )
Seat 5: Renton555 ( $24.90 )
Seat 9: Jamokian ( $24.23 )
Seat 2: CheriBibi ( $23.75 )
Seat 7: walnuts02 ( $23.25 )
Seat 8: AlyssaWick ( $4.75 )
spuds53538 posts small blind [$0.10].
walnuts02 posts big blind [$0.25].
** Dealing down cards **
Dealt to Renton555 [ 9d 8d ]
>You have options at Playtime Table!.
AlyssaWick folds.
Jamokian folds.
teeba420 raises [$0.50].
modawg3434 folds.
CheriBibi folds.
JQdaBalla raises [$1].
mattie_t20 folds.
Renton555 calls [$1].
spuds53538 folds.
walnuts02 folds.
>You have options at Contralto Table!.
teeba420 calls [$0.50].
** Dealing Flop ** [ 2d, 4d, 8s ]
teeba420 checks.
JQdaBalla checks.
Renton555 bets [$2].
teeba420 folds.
JQdaBalla calls [$2].
** Dealing Turn ** [ Qc ]
JQdaBalla checks.
Renton555 is all-In [$21.90]
>You have options at Contender Table!.
>You have options at Playtime Table!.
JQdaBalla calls [$21.90].
** Dealing River ** [ 7d ]
JQdaBalla shows [ 9s, 9h ] a pair of nines.
Renton555 shows [ 9d, 8d ] a flush, nine high.
Renton555 wins $48.60 from the main pot with a flush, nine high.
>You have options at Playtime Table!.

I wouldn't mind getting in a position to push this flop if villian is capable of dumping an overpair, but since that didn't happen, I think you should slow down on the turn.

Flop play is good. On the turn I would take the free card though. There's a good chance your pair of 8's is still good, plus you stand a pretty good chance of getting paid off if you hit one of your outs. Pushing like you did does have tons of fold equity against a decent player, but if you get called, you are putting in 85% of your stack as a significant underdog, not a situation I like to put myself into.

Think about this. Assuming your opponent is observant of how you play (which probably is a big assumption), you need to be capable of playing sets, 2-pair, and other monster hands in the same manner.