So my mom is kicking me out of the house, I have an outdoor cat that I've been taking care of, I plan on bringing him with me when I move out.
If I take him to the vet how do I make sure it doesnt have any worms / fleas / parasites before i bring it to my place? It eats rats sometimes so does that mean it has the toxoplasmosis?

Also i dont know if he's fixed or not, he has very small shrunken balls which makes me think hes fixed but I've also seen him "spraying" on bushes before, and i heard that male cats can sometimes piss outside the litter box on random stuff so how do I make sure he doesnt do this?
Also will it freak the cat out if I suddenly remove him from his outdoor territory and basically kidnap him? the cat is not feral, it used to be my neighbors that abandoned him, I think he used to be an indoor cat but im not sure, im just worried if he might try to rush out and escape from my new place, I heard that cats will try to go to their old home, so will I need to make sure he stays inside for a few months to get adjusted to his new home?
Its tried entering my mom's house in the past but she doesnt want to allow pets inside.
Any advice is appreciated. Pic related is him