Should I get the tall ball joints?

[grease monkey]

Hi guys, need some advise from you gurus out there.

I currently have the front end all apart on my '68 Firebird.
It will be setup with:

Global West upper arms
Hotchkis 2" lowering big block springs
1" sway bar
stock spindles with stock disc brakes
rubber bushings

While I'm at it should I get the tall ball joints?
...or even the X-tall ones?

The car is just a weekend cruiser, no drag racer or auto-X-car but I do like to see some improvements in handling. For the rear I've bought the G-bar from Savitske. A third gen steering gear box is also in the plans.

So, will I see a good improvement if I get the tall ball joints or am I just throwing expensive parts at my car without knowing what I'm doing?