Questions about base under a paver stone patio

Hello, I am building a patio with paver stones, roughly 20x16. I am building it on rocky clay in New England. I have dug out my soil and plan to put geotextile fabric over the clay before I lay my crushed stone and dust. I have a few questions and am grateful for any guidance: ~Is the fact that the clay is rocky going to cause any problems? I have removed as many rocks as I can but it is impossible to remove them all. ~Can the depth of my crushed stone base fluctuate so long as it is always at least 4" deep? After excavating and removing stones the soil bed is not a consistent depth- some areas have space for 4" of crushed stone but some areas could go as high as 8" or maybe even 12" of crushed stone. Is this ok? Does it matter if the soil bed is not perfectly even so long as it is compacted, has geotextile fabric over it, and the crushed stone is lever after installation? ~The patio will slope down 4" away from the house over 16 feet, which I believe is a good slope? I've also read that 2" over 16 feet would work?