/cgl/ - Cosplay & EGL

Are Sailor Scout uniforms difficult to make? I've never worked with stretchy fabrics out of fear. I'm not brand new to sewing, but I'd say I'm halfway between Beginner and Intermediate. I think I have more knowledge than actual experience right now, so I would like a second opinion as to whether a scout uniform would be a project within my skill range or beyond it. Alternatively I was thinking about buying a premade one and altering it, but other than the hip and sleeve rolls (which I was purposely trying to avoid working on) and the brooch would be the only necessary alterations. I'd love a second opinion, though.