I struggle in this spot for some reason

[TDouble]

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) internettexasholdem.com

CO ($99)
Button ($101.80)
SB ($301.45)
BB ($89.20)
Hero ($98.55)
MP ($8.45)

Preflop: Hero is UTG with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises to $5</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">SB raises to $20</font>, <font color="#666666">1 fold</font> Hero?

Villain is solid so far, no PT stats. I know he's playing 8 tables so this is obv a premium hand but are we still shoving here?