Isolate small stack?

[holdemfan]

PokerStars No-Limit Hold'em Tourney, Big Blind is t1200 (7 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

CO (t9590)
<font color="#C00000">Hero (t10063)</font>
SB (t53150)
<font color="#C00000">BB (t12079)</font>
<font color="#C00000">UTG (t3362)</font>
MP1 (t28585)
MP2 (t16662)

Preflop: Hero is Button with Q[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">UTG raises to t3287</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t9988</font>, <font color="#666666">1 fold</font>, BB calls t8788.

We just got in the money and it's time to gain some ground. I just lost about 15K with KK to a maniac on another table. This is my second hand on this table. I see the small stack go all in with no one else calling. I want to go HU. The results not as important. Question: was it good going all in to isolate?