You'll need shorter end links front and rear. With that 4" rear drop, you didn't get shorter end links for the stock sway bar? I always thought that, with a 4" rear drop, shorter and offset links were required. I have the DJM offset links.
The idea is for the bars to be as parallel to the ground as possible. I just went through all this on mine. Made shorter links by replacing the bolts with shorter Grade 8 ones from Home Depot. But I have almost twice the drop amount in the front as you. When I first dropped mine, I installed Moog K700528. They're 1.5" shorter than stock, but were still way too long. I ended up with 5" bolts for my drop. I think 6" would be fine for yours if you make your own. Do you still have the stock end links in the front? You might could get that Moog kit (you'll need two- one for each side), trim the spacer (thin aluminum) and just replace the bolts with some 6" ones from the hardware store.
BUT, in researching this for you, I just realized something I wish I had known. There's the Moog K700528, K700527, K700526 and K700525. Each are the same, but progressively shorter. I'm betting the K700525 or '526 would've been perfect for me. So, the '527 might be ideal for you as a direct bolt-in solution. You might have to find out the critical dimensions directly from Moog. I looked around online a little but didn't find any of that info.