Squadron sells a pretty good paint stripper called Chameleon. It's good for multiple uses too.
As always, be responsible disposing of the stuff.
I have fond memories of those 749 kits. A nifty five piece wing. One bug is that the cockpit cleary also includes the roof, IIRC. Kind of a funky seam.
I think Krystal Klear works pretty well on that kit, again from memory. The windows are pretty small and oval. I have the feeling that when you go to strip the thing, they may fall into the fuse.
I'd probably choose to whack them in, clean up the holes, paint your ship and then go with the Klear. Oh, and before the last one, squirt in a bunch of Elmers and shake it around until the loose parts stop rattling.
I think on one of these, I tried spraying the window stripe color oversized on both halves before assembly. Then I glued in the windows, masked that off, glued the halves together, putty and sand the seams. Then paint the overall color, remove the mask.
Another great kit, my favorite old commercial a/c Model, is their DC-6.