I would honestly look at the way you learn the best. For me..its actual experience. I could have a 20 thousand dollar set of cd's, books, etc etc etc...and still wouldnt learn as well as from an instructor or in the aircraft. I agree with many that it may be well worth the money for the cd set and gleim book...however..for myself..wouldnt work. Each person is different... if you cant decide which way you will learn better start with the cheaper route. If it isnt working all that well for you...buy the CD's.
Plus additional flight time isnt such a bad thing in the long run. I would rather be with a newly licensed pilot with 100 hours over one with only 50. Your insurance over time always goes down with additional flight time and ratings. Plus if your looking to go "all the way" you can always do other training the same time with your private if your ready to take on additional concepts and your instructor is ready to throw some your way. Especially on those long X-C flights with your instructor that are always a joy. Personally when i was doing my PPL i was only excited three times with it. First solo, first X-C...and my check ride when he shook my hand and told me "congrats...you now have your license to learn!" Well...i guess 4..but the last is better not discussed on the web for others sake.
Enjoy!