Dose - What would one like SWIM do as a drug noob

[Righteous_Fury]

(my first post ever, tolerate my newbage please)

Ok so heres the deal, SWIM is perscribed 30mg Adderall XRs and takes them pretty much every morning. He has a stockpile of about 90 pills. The only experance he has ever had was when he took 2 one morning while he was suspended (and continued to do 3 days worth of school work lol).

SWIM is 140 pounds. He is wondering, there is this big all-nighter hes going to with a youth group at his church (it involves laser quest, rock climbing, and roller bladeing) and he have some pills to spare from days he missed his dose. He wants to have some pretty strong effects but not so much that people would get suspicious (its organized by my church friends, and none of them do anything drug related). How should he dose? All tips are greately appriciated! thanks ^_^