Adam wrote:
I need to make a precise cut of wood to be 24" long and only 4 1/2" wide.

Right now all I really have is a 10" compound miter saw (as far as saws
are concerned) - which obviously won't do.

I did just pick up a very nice Porter Cable router!

So now I am sort of stuck realizing I am going to need to buy yet again
another power tool

The Router and a straightedge will actually cut plywood nicely. Many
CNC machines use a router to cut out the parts.

What kind of wood are you cutting?