Im on my second round of the Ultimate package. I finished the first time, did some practice tests and didnt improve. I pushed the test back to June, am redoing the curriculum and drilling with Cambridge package...
I agree with drilling and BR. I wouldn't bother with PT'ing for at least a month. Spend that going through the 7Sage curriculum and drilling the Cambridge packets.
You may also want to consider the Cambridge LG Packets. I believe they have one that uses all game from PT 1-38, organized by type and difficulty. In your case, it seems it'd be helpful to be able to focus in on certain types. Just my two cents.