Definately start a new logbook at this point. Professional pilots keep their logbooks locked up in a fire-proof safe at home or in a safe-deposit box, and remove it only to update it or for an interview/checkride...that will help keep it looking nice also. Obviously you can't do that until you finish all your ratings.

If you can't afford a safe, double-warp it in ziploc bags and put it in your freezer...it's insulated and will provide some fire protection and hopefully the burglars won't decide to steal your frozen fish too.

You choice whether to get the pages rebound...it might make a slight difference in an interviewers eyes.