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Linear and Goal Programming Problem

Hello guys, I'm new here. I have a problem regarding the assignment that my prof gave it to me. He wants me to answer these difficult question which I had a hard time in analyzing the problem. Here is the link of the question:

http://faculty.salisbury.edu/~tvbanks/AppE.pdf

He asked me to answer case 2-3 and 8-1.

For case 2-3:

I have no idea how does the production of the 1st quarter affect the next quarter since you really need to know the answer the production of first quarter to answer the next quarter. The problem is the 1st quarter is unknown and I have difficulty in developing the constraints.

Case 8-1:

Really have a hard time in understanding this statement:

To guarantee sustained future production, each acre of reforestation in each alternative

requires that as many acres as years in rotation be assigned to that alternative.

(I post the attachment what I did so far for 8-1)

Pls check it and help me to analyze the constraint for the third objectives.

Oh yeah, I used excel and data solver to answer this.

Thank you very much for your time and I really appreciate if you could help me to analyze and understand the case.