I am purchasing a new Mac Pro today, and was planning on purchasing my own additional hard drives and installing them. Purchasing them from http://eshop.macsales.com/. They also sell RAM and was thinking of installing that on my own also. The price configured through the Apple Store is $5900, with 24" Monitor. If I added my own HD's, RAM, and purchased Dell's 24" Ultrasharp (which was very highly reviewed), price is $4700. Good idea on my own, or not?