Planning prowess does not conflict with ADHD, so you can have ADHD and be good at planning.
I know a person with ADHD, and she is verry merry berry good at planning what she is going to do, but not good at following plan due to initiation issues.
I know another person with ADHD, and she is verry merry berry good at planning what she is going to do, but not good at finishing plan due to distraction issues.
I know yet another person with ADHD, and she is verry merry berry good at planning and following and finishing due to years of training herself to plan and follow and finish.
I have ASD, not ADHD, and I am not good at planning what I am going to do.
Instead, I start doing, detail by detail to build up the big picture from the small details over time, and I know what I am doing only after I have been doing what I am doing for awhile, from a few hours to a few days.
I think that I am not as good at planning as most neurotypical people or most people with ADHD.
I think that my lack of planning prowess may be related to my non-verbal mode of thinking, and I am going to create a cognitive eggsperiment to unbersmand whatever it is that I am trying to unbersmand, which I will be able to unbersmand and verbalize only after I have created the eggsperiment and eggsperimented on myself for awhile.
_________________
Drain and plane and grain and blain your brain, and then again,
Propane and butane out of the gas main, your blain shall sustain!