Which one to go with?

[sethc24]

Okay i got a 2000 f250 psd. extended cab s/b. Anyways i am doing couple things to fix her up. She's got gauges, exhaust, chip etc. And i am putting a 2 " icon spring pack on front. Front springs are in good shape. Looking at my injectors, most of them are original at 300,000 km. So here is the dilemma. I am intending to go to school soon so i have limited cash. And i cant figure out if i want to spend the money on a bigger set of tires or some stage 1 ss injectors?
If you guys had to pick what would you do. (no i cant do both i wish lol.)

[kanuck15]

Tires man, not having stage 1s wont keep ya from going down the road. Plus to go to SS injectors you need some other tuning so factor that in to