First off, congratulations on making it through school and second, I too admire your determination in following your dream.
I was diagnosed in 2003 with a brain tumor that destroyed a portion of my skull and was attatched to my brain stem and spinal cord. I underwent a subtotal resection and 40 proton beam radiation treatments.
While I am currently disease free, I suffer from the combined effects of surgery and radiation. Let's just say you can't poke around near the cranial nerves and not mess things up a bit.

The radiation, given at the highest dose they could dole out due to the residual tumor, has killed off my anterior pituitary.
I found out about the the tumor the day after taking my LVN boards. However, I've continued to work towards my goal of RN despite the hurdles. I'd be graduating this summer from the ADN program I got into (LVN to RN bridge) but we're military and moved last summer. I'm busy reapplying now in our new state. Yeah!!!
The issue of deficits isn't an issue if you're up front, in my experience. My employers have been more than understanding about whatever issues I had going on...co-workers too. I have intermittent diplopia, slight hearing loss in both ears, I fatigue easily and then there are the ever present follow up appointments with specialists. The medications I have to take (topamax, in particular) make me feel like I'm pushing thoughts through a strainer...but I get by.
But I come to work, I do my job and I'm trying...which makes me feel like I'm working towards something. I'm also showing my kids that when things don't work out the way we've planned or something bad happens...it doesn't mean game over, KWIM?
Good luck with the new job and you're in my thoughts and prayers!