You can't go wrong spending on training and medical.
If you're not going to go big after internationals, lower your IFA budget.
If you feel comfortable with projecting a players potential solely by current ratings, age and makeup, lower your advanced scouting budget.
If you have a preference of high-school vs college players in the amateur draft, adjust your HS/College scouting budgets appropriately.
If you're not planning to pursue IFA's, you intend to draft conservatively in the draft, and do not anticipate getting any type A/B comp picks, then you can set your prospect budget at the minimum ($6m).