Keep trying RPS. I know there's a block now because of spam that you can't post until a certain time. PLENTY of lowered guys on there.
As for your question, it's really hard to say how much it dropped it without beginning numbers. I think, but don't quote me, cutting one full coil is either an inch or two inches. I wouldn't advise on cutting any more coils because of alignment issues. If you flip the shakles, that'll usually give you two inches in the back. To get more drop from the front, consider going with DJM dream beams and more in the back, consider a flip kit.