Check how much actual lift you have in the front like this (see image).
If you like the way it drives then don't mess with it. Seems like you have a little less caster than I'd prefer but that's up to you. You've got the arms to adjust if you ever want to.
As far as driveline angles, your front shaft is going to be dependant both on lift height at road ride height, and shock length (for when you're at full droop if you off-road). I can't find the extended length of those shocks...
The additional spacers will affect the ride height, but doesn't affect your extended shock length.
I guess just keep an eye on it, listen for noises and check for it spitting grease or a ripped boot on the rzeppa joint by the transfer case. Teraflex also has those high angle rzeppa joints if you want to try that, I've had good luck with them although a couple people haven't, and you have to be careful on the install.
Another option is the geometry correction brackets, which will help maintain a better pinion and driveline angle through the arc of travel. But if you off road I hear they cause clearance issues.
Anyway I hope all this is somewhat helpful.