People who have used GregMat, which Study Plan would be more suitable for my need?

For context, I am from engineering background so my Quant is fairly decent, however I do need to revisit older topics like Geometry, etc. My verbal is average, I need practice and vocabulary learning.
I read that the I'm Overwhelmed Plan is more for people with really weak foundation of quant? And 2-Month plan is unnecessarily extensive. I also read from the FAQs Page on GregMat that 1-month Plan is for people who are in a hurry and don't have much time left
However I have few months to prepare, prolly in july but I am in no rush as I will be applying in next year's start. I also am working and also studying for my bachelors simultaneously. So, I am not sure if I will be able to commit a lot in one day but broadly speaking I have enough time.
So this is the source of my confusion; 1-Month seems like a plan for people who are in a hurry (which i m not), I'm Overwhelm plan for people with really week foundations and 2-Month for people with a lot of daily hours to spare. I hope I don't sound obscure

In light of the above facts, People who have used GregMat, Which study plan would you suggest?

Thank you in advance :)