im know im late replying but i was out at lunch.
its interesting to see that your at 3.5 (closer to 4 after reading you you got the more exact measuremnt) because my 2.5" coils on my 2 door with, what i believe to be, heavy front and rear bumpers sits at almost 3.5. im sure if i still had stock bumpers i would sit even higher.
I will go home tonight and measure from these points if it isnt still raining like a bastard and give you what my JKU has with the TF 2.5 coil lift for a net gain in height.
And from all my reading here on this site, Control Arms are one of the last mods on my list as the stock ones on the JK are long enough, they don't necessarily contribute to my off road performance (notice how I said *my* and not general off road performance?) and I would only need 4, not 8 at my current lift height.
In all fairness I do not regret my lift purchase even though I joke about having a crappy TF lift. I went with a budget coil lift and a budget coil lift is what I have.
I intend to have a fairly light Jeep considering it's a big JKU to begin with - my rear bumper will be EVO D-Rings, I may skip the tire carrier, I'm considering just an oil pan skid instead of a skid system (undecided).
Anyway, the point is I know there is a better lift out there, I have a run of the mill budget lift but it serves my needs and an AEV may serve the OP needs as well as your LCG may serve yours. But knowledge of how things work, why they work and what you could do better/differently/where to go from here is particularly valuable in the Jeep worl when NOTHING is cheap. Nothing. FWIW if I go with a heavy front bumper and winch I'll be seriously debating new coils
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