I have the AEV 2.5 DS w/ bilsteins and I recently put an ARB stubby and 8k winch. I ended up just taking my buddy's old .75" isolator spacers and it leveled it out again. I dont see the huge issue, you can always add a spacer if your wanting to keep the height. Im not even sure it was saggin enough to add the spacers, but thats what I would do on my other jeeps and it never was a problem.
The 2.5" rides really well, especially with the brackets. I had it without the brackets and then with them, its night and day. On the freeway is where it makes the most difference, on street rough roads its basically the same. But cruising is almost like a cadillac. No complaints here, and I almost have 25k miles on my kit. No issues with anything coming loose or strange sounds.. which is always a plus haha.
Not a bad choice for spending about under 1200 IMO