Create graphic design and a magazine minimum 20 pages

Design details: I Need for a wedding a Magazine to be done. I send you the text and photos. For style it should be like a typical yellow press Magazin, a bit trashy, dazzling text. I guess at the end the Magazin should have Minimum 20 pages. It should be in a file that is optimal for printing. If it should be more than twenty pages it shouldnt be a Problem. We will start with the conception right now. I guess in the next two month all friends will sent text and Pictures, so the end of this Project (and the escrow of the Money will be in two months or later) Please mind that.
Please give me a fixed Price for 20 pages. If we Need more pages, I will calculate with 1/20 of the fixed Price for each additional page.
Number of pages needed: 20
Ideas for the visual style: like attached picture
Where the design will be used: print
Extra notes: