IMO, larger brakes are a want, no necessarily a need. If your nrakes are working porperly, you should still be OK with forced induction. Larger tires, OTOH, are more likely a need if you go turbo.
Look around for some sales. Hahn occasionally offers their "Slightly Warm" special that gets you their Stage 2 turbo kit and a FREE, slightly used exhaust, saving significantly over the cost of other turbo or supercharger kits which don't include an exhaust. I ordered my Hahn "SlightlyWarm" special during last Fall's special and got a complete system for around $4200 with shipping. The Hahn kit requires drilling/tapping the engine block for the oil return line or you need to pay $250 for a modified oil pan. You get $150 back upon return of your unmodified oil pan.
An exhaust will typically add anywhere from around $500 to around $2000 depending on what you want for ether a turbo or supercharger system. The Alpha turbo has been offered on sale for around $4700+/- and I think I've also seen the DDMWorks supercharger for a little less. Again, neither included an exhaust.