Coil over single adjustable v double

[Belsh]

I'm about to purchase the QA1 coil over conversion kit with upper and lower control arms for my 70' C10, just curious if you guys think I need the double adjustable over the single?
I came to the conclusion from previous posts on here that the QA1 is superior to the CPP so already spending more just not sure if I need to spend another $300 to get the double. My truck will only ever be a cruiser so don't need anything fancy geometry wise, I'm really just converting for the way it looks and the ability to adjust the ride height.

Thanks as always