i'm learning to do piercings i'v not done many yet but i'm getting into them slowly
i'v seen a couple of clit hood piercings and they are a very simple and easy piercing nothin to worry about
clit itself i would double check about as there is a high risk of losing sensation in it
the clit hood will still improve sensation but as anything you'll get used to it and desire more
sure you can wear vertical rings too if thats comfy for you. bar might be better when you get it done as it moves less/might heal easier, but as long as you clean it properly it should be fine either way
im on the other trip anyway now...took all my piercings out over the last years (nipple, tongue, labret, most earrings, balls,..), apart from the prince albert (considering it too though). end of day they all get in the way one way or another, even managed to rip out my frenum one during sex when i had it lol