Told my mom I (18m) want to move out after I enroll into uni this September, she told me she sees me as a failure

Fair bit of context, so I just finished my graduation exam, got the scores and I'm just waiting for the unis to publish the qualifications for enrollment. Currently living with my mom, step dad and two decade-younger siblings. We just moved in a bigger apartment, pricey rent but it's closer to where they work and it's bigger than our old apartment too. I like living in the apartment but I don't like the fact that I do things around the house yet constantly gets reminded that I'm not doing anything despite having to watch over my sister during the day, making lunch for her then maybe pick up my brother and then make dinner, sometimes vacuum the floor. I don't complain about the chores I have to do cus duh I feel like I should do them but recently got into a swift argument with mom while I was getting pissed off at my sister for not wanting to eat what I made for her because it's "too much" (literally 1/4 of a pack of ramen) and she held a grudge for an entire day until the afternoon she came busting in the not-our-apartment door and saying shit like "if you don't see me as your mom then get the fuck out of here (English can't transcribe how aggressively she said it)" and rhen demanded that i go make dinner. Now normally I would but I just got home from my job as a personal tutor, 2 hours session, and was still pissed off about yesterday's argument so I snapped back at her. Called her crazy under my breath and then she started to throw stuff at me as usual. This kind of argument happens twice a year I'd say, each time last a long period (longest have been a full week and every time it ended with me having to leave the house for her to calm down from freaking out) so I had enough and hid in my friend's house for 3 days. After that I came home, she seemed to have calmed down and no longer held that grudge but I was getting sick of those kinds of arguements and also having to do chores for ungrateful siblings and study in a lousy environment so I told her I want to move out and asked if she would pay my tuition if I did, cus I was also wondering if her love was unconditional. A lot of guilt tripping later involving about how she did all those things for me and now I want to move out and no help her do chores around the house and take care of the siblings (another one about how she moved into a bigger house so me and my siblings can habe our own room but I have two siblings, they'll need it anyways), some de-escalation and what I thought was understanding. She said she would pay for my tuition but would no longer see me as a son, which I agreed to.

So just wondering if this is a good idea. I have a place to stay, free of charge, until I finish 4 years of uni, food will be covered by the host too and there's a good chance I'll qualify for a government program that covers tuition and allowances for nuclear engineering.