Hi Alex,
For a treadmill, the incline should be set at 2-3%. As far as skipping ahead, you surely can do this if you are able to, but sticking to the program will help to insure you have built up a base level of fitness in a progressive manner. It also wil help to prevent injury since running is a repetitive sport. The extra time will let your body adapt.
The speed portion is something that you'll need find your way into. If you can carry on a conversation while running, you probably have the speed just right.
Rob