I will answer your list of questions in the order presented:
1)Pitt v. Duquesne: as you already know, Pitt is ranked higher than Duquesne (Pitt is 2nd tier and Duquesne is 3rd Tier). However, it comes down to how well you do in your classes. If you do well in school, then you will (most likely) find a good job.
2) Parking: parking is not an issue. I have a lease in a garage on campus. There are two garages (Locust and Forbes). Information on the parking options are available at the parking office on campus. There is also an option for surface level parking, but I'm not too familiar with the difficulty of finding surface level parking.
3) Prof reccomendations: As a first year at Duquesne, you will be assigned to a section. Your section will have the sames classes- Torts, Property, Contracts, Legal Process (Fall), Civil Procedure (Spring), Criminal Law, and Legal Research and Writing. Legal Research and Writing and Criminal Law classes are further broken down. Your section assignment means that you have no choice in professors or the classes that you take.
4) Class difficulty/grading system: This is a difficult question. The difficulty of classes differ depending upon the student. The classes are difficult, but it is manageable. The grading system is somewhat harsh: A+=04.0, A=3.75, A-=3.50, B+=3.25, B=3.0, C+=2.75, and so on. There is a policy that in order to be re-admitted your for your second year a student must carry at least a B average. As far as the workload, I have found that it all comes down to efficiency. For the first couple of weeks/months, you will not be very efficient. However, as the year progresses you will better know what is needed to successfully complete the work. I do work my "butt" off, and my grades have reflected my hard work!!!
If you have any other questions feel free to ask!!!