Struggling with College Accommodations and Parental Support

I'm starting college in the fall. I started doing research and applying early on, but then my health got worse in February and none of the options I previously had would work so I had to start from scratch. Then one school (that I applied to because I felt bad for asking for info and not applying) offered me a decent scholarship and I felt like that was the only real option I had because thats where my parents wanted me to go. I went to freshman orientation and hated it so I started to look into a school that I had applied for but forgot about. We visited the school (the campus was closed because it was sunday but we walked around) and I loved it. The only problem is that the school is slightly more expensive and they didn't offer any scholarships. I talked to the office of disabilities and they were amazing and got me great accommodations, including a fantastic dorm that fits all of my needs. I didnt expect them to be able to do it because I'm doing this so late but they were able to and I'm over the moon. I told my dad about the school and about my perfect room assignment and all he could talk about is how expensive it is, and how we'll have to "talk to them" about it (which likely means I wont be getting the room). He doesn't have any chronic illnesses or issues and he rarely ever gets sick. I'm terrified that I'll go to college and fail because my body can't handle it (which is why my accommodations mean so much to me) but he's never had to deal with things like this so he doesn't get it. He also has the emotional intelligence of a spoon so trying to explain it to him never works. I don't know what to do, I know it makes me sound like an AH to say the money isnt the most important thing to me, but high school was miserable and I had an amazing support system to get me through. In college I won't have that and I don't think I can handle it mentally if this fails. I don't know how to deal with this or explain my feelings to him without sounding insensitive to the fact that he has to pay for it. what do I do?