Maybe during the withdrawal you'll experience.... It will eventually return to normal though if it raises. My BP is usually lowers on days where I don't take Adderall though, I get lightheaded sometimes when standing up.
Anyways, eat right and take the right vitamins and supplements and your BP will be fine. I doubt you're going to go into hypertensive crisis or anything.
HR is basically always higher when you are on a stimulant. That's to be expected. Yes it will go down to more of a regular resting HR eventually. Is your measured HR while on adderall ? Or your resting without ?
Take things like magnesium (make sure its a chelated form), B6 vitamins. You can try l-tyrosine which I recently bought as it helps to replenish dopamine, but I also read something about it possibly causing an increase in BP ? I don't know if it was correct or not. Someone else will have to chime in on that. And of course an all around multivitamin.
Sleep too. It's crucial.