Definitely do an aptitude test. But also note that if you are already a PPL with a number of hours, parts of the aptitude test are less accurate.
I would have thought you'd have an unfair advantage. Actually the opposite is true, at least it was in my case. Fortunately a sim flight showed a more reasonable assessment of ability.
So, do one, but don't be gutted if you don't ace it all.
PS truck flyer, congrats! An enviable yet unenviable position for you! Good luck whichever way you go.