I like the overall arrangement and the backing track. It could use some production TLC though, I think it's maybe drowned a bit too much in reverb (and hence sounds distant) and, for example, the open hihats in the second half are way too loud. Since it's a WIP, you might be aware of that though.
Typically, for tracks like this I find you can get away with Shreddage for rhythm guitars quite well, for leads... not so much. If you can, try to collab with a guitarist that can perform and record the lead for you. I've found that collaborations can be a lot of fun, as well as an educational experience and in general make the music better. And since I've enjoyed what you did with the arrangement, it would be a shame not to try and finish it and make it the best it can be
Good luck with the last stretch, and don't forget to have fun!