$5k is pretty generous from your mom, I wouldn’t call it “not much”. I’ve been given a whole $0 towards the purchase of any vehicles in my lifetime.
That being said, the 2.5RS is a great choice. I’m not sure what was done to it, but Phil@Innovative’s 2.5RS before the swap was an absolute blast to drive. Not extremely fast, but quick and had very predictable handling. I would DD the shit out of one.