Depends on how much profit you're expecting from the English trade, in say 3 rounds.
R8 T English (WBD) $600,100 BE 48
Scores of 100,100,100: R11 $604,800 BE 158
Scores of 110,110,110: R11 $626,500 BE 150
Scores of 120,120,120: R11 $648,200 BE 143
Some more variation in scores...
Scores of 100,110,120: R11 $620,900 BE 137
Scores of 120,110,100: R11 $632,100 BE 164
Scores of 110,100,120: R11 $623,300 BE 148
And if we take his season's low (63), 2nd high (145) and average (119)
Scores of 63,119,145: R11 $601,800 BE 92
Scores of 145,119,63: R11 $647,700 BE 201
Scores of 119,63,145: R11 $615,200 BE 156
In short, in order for him to make any significant profit, he needs to score 100's in his next 2 games...The bigger the ton, the higher his price will climb. If you're confident that he can do this against Witts & Soldo then go for it.
With that says, I feel that he has about $50K of growth max based on what he's shown excluding the 204 outlier.
All the best with your decision.