Stack Advice for School and Focus

Hey guys, I'm currently in university for Computer Science and wanted some advice on this stack. I wanted it to be a little more on the budget side because all 3 were too expensive for me.

• Bromantane (50-100mg) AM
• TAK 653 (2mg) AM
• PRL 853 (5-10mg)

Any criticism or tips would be helpful! Thank you