Villain is a winning player on a decent sample of games. First time i play him.

***** Hand History for Game -1659434553 ***** (IPoker)
Tourney Hand NL Texas Hold'em - Thursday, November 12, 10:28:28 ET 2009
Table TURBO NLH Heads Up 100  364957331 (Real Money)
Seat 8 is the button
Seat 3: HERO ( $1470.00 USD )
Seat 8: las8930 ( $1530.00 USD )
las8930 posts small blind [$20.00 USD].
HERO posts big blind [$40.00 USD].
** Dealing down cards **
Dealt to HERO [  7s Ah ]
las8930 raises [$60.00 USD]
HERO calls [$40.00 USD]
** Dealing Flop ** [ 9d, Ac, 8c ]
HERO checks
las8930 checks
** Dealing Turn ** [ Qs ]
HERO bets [$120.00 USD]
las8930 raises [$240.00 USD]
HERO calls [$120.00 USD]
** Dealing River ** [ Kh ]
HERO checks
las8930 bets [$320.00 USD]
HERO calls [$320.00 USD]

Is this the best line? std?