I'd wait until after the elimination, and see just how high that pushes the cash out. Then, it's a case of looking at who she's in the final with - if it's Matt and 5AM, I think they're pooling votes from similar sources, and could split their votes, leaving Saara clear to romp to a win. If the acts left are Matt, Emily and Saara, I have a sneaking suspicion that Matt alone gets the bland boy vote that seems to push the acts like Ben Haenow over the line. I'd cash out if it's the latter scenario.