I have 300f/225r and I am running at 1/1 now. I have only bottomed out on my torture test corner and speed bumps. I am almost wishing I had done 275f/200r. I would dial it up to full height and then play around with the AGXs.
As for grinding - I did a bad monkey thing and used the wrong tool. I had my brother-in-law's compressor sitting there and when my angle grinder and bench grinder both came up dead, I bought an air powered cut-off tool. It made REAL quick and ugly work of nibbling off the lip at the top of the strut body (sticks out a few millimeters from the strut body).
I am GUESSING that the front sleeves would fit on most struts. I think I originally got rear sleeves for stock struts and the AGXs are a few millimeters bigger. I think Ground Control charges $60 a pair for the sleeves.