As an LPN in the process of getting my ASN, I can only recommend to you that you pick the route that best suites your situation. If your long term goal is for your ADN and are preparing for full-time enrollment that would be a viable option for you. If you have time constraints and want to get into the field and go back to school later, then the LPN program would be the choice.
I chose the LPN route first because of time contraints, financial restrictions, and was unsure if it was what I really wanted to do.
I am completely pleased with the training and education I received in LPN school. It is rigorous, and even had some students drop out to go to the ASN program instead. They said it was easier. The main reason I think they felt this way is TIME. In LPN school they cram as much as they can into a short amount of time, whereas in ASN program more time is allowed to spend on subjects.
I want my RN, and find it hard to get back into school with a full-time job and family. But I also am glad that I got my LPN first, allowing for skills and experience I would not have gained otherwise.
Best of luck!