I have a metabolism that's off the charts so would it be a good idea to start taking Adderall for like a month or so?
Um, it's a stimulant. Why would you think a stimulant would DECREASE your metabolism? Most amphetamine sold in the 1950's and 60's was marketed as a diet pill, used for weight loss, not gain...
Also, putting aside this is a harm *reduction* site, why are you trying to ask a question to *increase* harm alone? This isn't Drugs Forum. Sigh.
Anyway, the short answer is if you take Adderall with the intent to get high, the vast majority of the time between refills, you'll be out of Adderall. The dose required to receiving euphoria (get high) is several times the therapeutic dose (prescribed dose). By getting high, you will deplete dopamine reserves, which act as a comfy cushion for your brain to rest on while you're in-between doses. That means you will have acute amphetamine withdrawal whenever you're not on amphetamine, which isn't cute at all. So you won't have the luxury just to "take it for a month," and most of the month, you'll be out of your supply, because you required high doses to get high off it.
It doesn't sound like you even factored in that taking it "for a month" at doses required to get high mean you won't actually have it for more than a week or so after you fill the prescription. Which means you will resort to meth, or in the best case scenario, spend most of the month staring at the ceiling while lying in bed because you have so little energy. What a plan. You should ask yourself how you're working to reduce harm and keep yourself together in a sustainable way, not take a drug that will be spent within days and suffer acute withdrawal from for the remainder of the month.