Welcome, harrison!
An OK kit. Not a bad price. A second bread board is not a bad idea. Looks like a reasonable selection. As noted, sort of depends on where you are.
As Bionic suggests, Radio Shack, which is a fav of mine. Pricey, by comparison to Digikey, Mouser, etc., since they package individual components, but worth it (instant gratification, no shipping $) in my book.
And some items, i.e., a single package of a nice variety of seperated of resistors (caps also), a good selection of analog and digital ICs and plenty of the other items that you listed (although not specifically designed for bread board usage - see below) is always useful.
I would strongly suggest that you get the box of assorted, precut jumper wires for your bread board - they are a real time saver. Also some alligator pig tails. And a stash of shrink tubing.
What sort of circuit ideas are you considering?