Thank you everyone for the nice comments:
The solo is actually the same guitar sound essentially but I thought I would be clever and send the signal to a guitar amp sim with only the cab loaded. The vibrato/modulation is a little less conspicuous on this one, I may need to have a look.
As far as singing higher, are you talking about in pitch or formants? Cause believe me that high part is seriously about as far as I can go, and there is a transposition toward the end. Luckily I posted over at the Home Recording forums and have a few (more experienced) vocalists gonna try to do something with this one, so just gonna wait and see if anything comes of it.