Tasty lookin’ setup there, guy. That Strat looks a lot like mine; American Standard Swamp Ash. I use a different head (Mesa Boogie preamp & mono block Peavy Classic 60 power amp), but the same cabinet for my “big” rig. I don’t have a guitar with a P-90 pickup....yet!
The P-90 is the pickup that punches you in the face!
It may be a single coil but it sounds nothing like the "traditional" glassy, jangly Fender single coil sound. It's a snarling, midrangy beast! Plugging a flat-top Les Paul Junior with a wrap-around tailpiece into a Marshall is one of the definitive sounds of classic rock. Full, ringing power chords and screaming, chirping leads are easily attained on this unsung little "student" guitar.
I love my Junior almost as much as the '58 Historic Reissue right below it. It's a monster of an axe! I bought it in '09 and immediately wondered where this guitar had been all my life.