No I didnt. I intended to only get 4". The supplier told me the springs would settle, but they certainly arent going to settle that much. Originally it was about .5" higher, so it has settled a little.
The stance is great and I like the clearance, but honestly I dont need it. I think swapping the springs is likely what I'll do. What other issues could I get into down the road, beyond the caster?
Drive line vibrations will be the big one. I see you went with a DC shaft. They don't always solve the problem, and tend to wear uni joints fast.
Other things that are typically needed with big lifts.
Adjustable rear links
adjustable panhard rods. Raised panhard brackets away bar extension links
Extended brake lines
extended bump stops
LSPV extension bracket
Things that are affected . . .
You'll get more bump steer as panhard and steering link geometry will be off.
Handling in general will be affected due to link geometry, and raised centre of gravity (more body roll)
Raising the rear panhard mount on the rear diff will help correct some of the poor handling, but you'll lose the factory smooth handling to some extent.
Knuckle studs on the passenger side knuckle / steering arm are more likely to work loose (search "check yer nuts").
Rear brake balance can be problematic unless LSPV is set up properly.
Parking in garages can be a problem, at the mall or at home.
It'll feel less stable off road due to raised centre of gravity and more body roll due to longer springs. I've known guys to build up a rig with talk lift, then sell it because they were terrified of being on a side slope with the extra lift.
They are more difficult to get in and out of. May not be a problem for you, but what about missus, kids, friends? I once had a date fall out of my 4" lifted cruiser trying to get it of it with held on (great impression on a first date

)
6" lift looks like you're compensating.
I'm sure there's other things impacted, but forget.
I previously had a 4" lifted 80, and a 2" lifted 105 series.
The 2" lifted cruiser went everywhere the 4" lifted 80 did, and then some. The 2" lifted cruiser put more built up rigs to shame. The mods I did meant it just worked. It was stable and predictable. It had limitations, but the trade off of a higher lift wasn't worth it IMO
I currently have an 80 on stock/original suspension running 305/70R16 tyres (33"). Eventually I'll put a 2" lift under it. I've kept tire size at 33" because I like the gearing to stay close to stock