Yes its fast then fastest. Too many pull deliberately slow, its ok in the beginning when youre learning positions but should be quickly weened off. If your ankles cant move anymore, then theres not much more you can do with your start position (you certainly dont need to raise your hips higher, youre correct on that). You should do some ankle mobility drills and see if those help, then worry about your hips later:
Take some videos of you pulling faster and dropping faster (dont just pull fast and drop slowly).
Youre overthinking this. Dont worry about rebending the knees, that will happen on its own. You can turn the toes out if you want, I prefer that, but just drive with your legs. Read this to get in a better start with the toes out:
Note this part: "So where are the hips? I donâ??t know; I havenâ??t measured you. If youâ??re on the short end of the scale, the hips will most likely be above the knees; if youâ??re a bit longer-legged, the hips may be even with or even slightly below the knees. Understand that hip height is a product of our two basic position criteria (bar over the base of the toes and arms vertical from side), not a criterion itself." Again higher hips will get you nowhere (as will trying to shrug the bar up).