I've just had a look at your team, and while you have done an absolutely extraordinary job to get to where you are, I think you need to trade like crazy in the next 2 or 3 weeks. My nephew is the current "Million Dollar Minute" carrier over champion (Joel Doutch), and he's playing under the "you've got to risk it to get the biscuit" approach. (He is currently in South America with his girlfriend, and I can honestly say, I have no idea how much wins, outside of the $17,000 he has won in televised shows so far!) I think you need to adopt the same approach.
Given you are trying to bridge a gap, that 244 players in front of you are also trying to bridge, I think you need to run in a direction that most of them aren't running in. In that sense, I would actually recommend going Wallis! I know I don't have to suggest this, but it would seem you also need to role the dice on Gray/Beams/Dangerfield/Franklin as Captain, rather than taking Fyfe, assuming you had the VC on him.
You certainly won't make the ground you need to, running in the same direction as those around you, but can't afford to run off on ridiculous tangents either. The one bit of advice I can give you is, the risks you take must have a value factor built into them. Not every move you make needs to be a risk, but some definitely should be. Wallis looks to be a value risk worth taking. I'm sure you have half an eye on Sidey as well. I think he could be nearly the key Mid for pointy end players in the second half of the season.
Some may take this as a bob each way, as earlier in the week I suggested Wallis wasn't a player for pointy end players. Each situation has it's own "best step from here" scenario. lakb24's current team has 4 risky and 8 non playing elements in it. This means, depending on his current Cash reserves, he needs to really role the dice on a value pick, just to maintain contact with the teams in front of him. He is currently ranked 246th overall.