Moving out of my house...Dilemma (AGE 19)?

I am 19 going to 20 In June and my buddy of 6 yrs. and his girlfriend want to move out into this place they got a deal on. They want me to room with them to help with bills. Both do not like home lives, but they both have jobs. I am going to school full time and have no job. I do have some money set aside so moving In Isn’t really the problem finically. I like where I am in my life but I do need a change. I want to live on my own; but I’m not constrained at my house. I have lived pretty much the way I wanted here my whole life. Same bed room...same shower.... same set of stairs for 19 years! ALL my fondest memories are in these walls. My relationship with my parents was not always great but I feel like things are finally getting better and I don’t want to ruin what we have gained. They both want me to stay and they both want me to be happy, and I think I really should have moved a while ago but I think it’s harder to leave something so familiar with no pressure. I've never lived anywhere else so I guess I’m faced to deal with it all in one lump sum... what would you do?