My opinion, and only my opinion, however, having been in EMS almost 20 years and holding positions as a field medic, QA/QI, and Director of Operations, as well as an educator, I have very strong feelings in that experience is what will build a truely good, well rounded medic. Many educational institutions and services used to back the idea of entering at the Basic level, getting experience, then moving to Intermediate, getting experience at this level, and then making the move to Paramedic. Now, the thought (for whatever reason) is either enroll in a degreed program and get the Paramedics license, or get your Basic and then apply straight to Paramedic, no experience necessary. I've seen both. I am a true believer in that a good Basic makes a good Intermediate, makes a good Paramedic. The opposite is also true; a bad Basic, makes a bad Intermediate, makes a bad Paramedic. Do yourself a favor, take the time, go throught the level process and get the experience. You not only gain valuable insight for the next level, you prove your ability and knowledge to your peers, service, and the medical professionals you will work with (co-workers, nurses, & doctors) and gain respect from them. There is no substitute for experience. Alot of what you will see when you "play" at each level prepares you for the next. You also get to work with the providers at the higher levels and gain valuable insight to the "real" street world, as opposed to the book world.
Whichever way you decide to go, best of luck!