Unless you have a lot of these pieces to cut, its probably not worth making
a suitable jig to cut on a tablesaw. The thought of cutting without a jig
makes me cringe and want to count my fingers.

I make a lot of samllish things and one of my most used tools is a bench
mounted sander with a disk and belt combo. They are relatively cheap.
Basically, if you can draw an accurate line then you can sand to it
accurately (and safely) by simple hand holding with this machine even if a
compound angle is required. Usually I use quite course paper on the disk
and fine on the belt.

Hope this helps
Cheers
Bill D
New Zealand