The two staffs is a neat thought, but try out a single staff. There's a few moments where the higher or lower bits are on the staff that isn't higher/lower (Mostly thinking about measure 25 but it happens a few other times that aren't as easily solvable) and it just feels off. It would also solve a lot of issues of notes that are on both staves, which I would have no idea what to do with if I were to have to play it.
As for if it's playable, I am no expert. But I can say that a lot of it looks suspiciously like you just threw in the 6 notes you needed and didn't think too much about fingering. Which, to be fair, is also how I would do a sketch. If you can, you really want to find someone who plays guitar and run it by them. Eveen having them just take a quick look is incredibly helpful (I know from experience). I've linked a pdf or two from when I was assigned to write a guitar piece so that you can also hopefully use them. (They are attached and are very helpful as someone who has never touched a guitar)
As a piece itself, I like it! I am frankly not a great critic on pitch collection or form, but overall it sounds nice!