Brandon:
That's almost the exact kit I got. (I got the Cabela's version for 8 dollars more, except it includes the Lee Autoprimer which I don't use, anyway.)
The powder thrower that comes with it is pretty accurate for pistol-size charges. You definitely don't need a powder trickler to start off with. I will warn you that this powder dispenser likes to leak powder out the side, especially with smaller, denser powders. I use it with Unique, but I prefer to use a scoop with W-231, else 1 charge out of 20 ends up on the bench.
You definitely want a tumbler, IMO, unless you reload only for revolvers. With clean brass, you don't even need to lube .45 ACP. And 150 .45 ACP cases is just about what a small tumbler will hold in one load.
And don't forget to buy a bullet puller.
Also, don't forget to pick up 1/4" or 5/16" bolts and nuts to secure your press. They are not included. You'll need 3 of them. The length of the bolt holes of the press, itself, is 1". So add 1 1/4" to the thickness of your bench, to allow room for the press and the nut.