Clean a Layered Autocad File Isometric and create a Clean Layered Adobe Illustrator

Dear Freelancers, I am an architect creating a presentation for a public park project for a community group and need some help with producing a series of layered isometrics of the scheme from Sketch up to Autocad to Illustrator. Requires a freelancer with a power computer for processing. I have exported the majority of the isometric files into the autocad to create the layered illustrator that I am desiring. The aim is to have a series of isometrics of the scheme with each element highlighted depending on which I am presenting within the A3 presentation document (please see attached). The Autocad Drawings need to be simplified in autocad with the SIMPLIFIED CLEAN OUTLINES OF THE ELEMENTS ONLY REQUIRED/DOUBLE LINES REMOVED THE PRESENTATION WILL BE ONLY FOR A2 MAX. Similar to the level of detail shown in the this link. One with thick outline, a medium line and a soft line. [login to view URL] The eventual Illustrator files should be layered cleanly on a series of A3 artboards and grouped so that the line weights can be easily changed. I am using indesign for the final attached document. I have a large sketch up base file which I have exported the majority of the autocad drawings (using parallel projection on and the scene option to align all drawings). I need a simplified solution to be provided for the trees and the adventure playground (keeps crashing when exported). In the end I require artboards with the following drawings required or seperate Illustrator files if it is easier. Page 7 - City Background (clean buildings and roads) with the Albert Basin Site (blank canvass). Page 15/18 - Completed Scheme with everything. Page 19 - Completed Scheme with everything. MARINA AREA HIGHLIGHTED Page 20 - Completed Scheme with everything. CULTURE AREA HIGHLIGHTED Page 21 - Completed Scheme with everything. CENTRAL PARK BUILDING HIGHLIGHTED Page 22 - Completed Scheme with everything. CHILDREN'S PLAYGROUND HIGHLIGHTED Page 23 - Completed Scheme with everything. OUTDOOR GYM HIGHLIGHTED Page 24 - Completed Scheme with everything. SKATEPARK HIGHLIGHTED Page 25 - Completed Scheme with everything. ADVENTURE PLAYGROUND HIGHLIGHTED Page 26 - Completed Scheme with everything. CENTRAL POND AREA HIGHLIGHTED Page 27 - Completed Scheme with everything. PEDESTRIAN BRIDGE Page 28 - Completed Scheme with everything. PEDESTRIAN BRIDGE OPENING - REQUIRED OPEN AND CLOSED Page 29 - Completed Scheme with everything. WATERFRONT GREENWAY Page 30 - Completed Scheme with everything. NATIVE IRISH FOREST - SIMPLIFY THIS TO OUTLINE. I require a freelancer who understands clearly the aims of the project and doesnt require multiple follow up questions. The project requires a quick turnaround of 5 days. All the best, James