I bought the Makita for $30, works great after sqaring the blade to the shoe, cut the 2.5 (or whatever inches) and used the handsaw the rest of the way and sanded it smooth. It looks a lot better than horrible and I didn't poke any new holes in the chain saw.
I have to admit that I wonder how the chain saw would have worked out, but the world will never know.
Someone mentioned buying a used plane on Offerup.com.. That's where I found the Makita so it's all well.
I figured it's time to change my signature so hold your breath. This is it.
Marty or Marty Farty if you feel mean.