Looking good man! I would advise you to add some weights to the side former to help keep it flat. I've had my side profiles skew a little before if the surface is not fully flat. The glueing and taping can make things warp a little and at this size, it may be enough to be a pain to correct. Simple sammich bags with sand would be fine.
Oh yeah... I have been using weights but they weren't there for those pictures. Definitely want to avoid warping. I figure another evening or two of skinning and I'll be done with this side and ready to flip her over.