Fictional Modern/Gothic City Map Commission - Addition to a Graphic Novel

Introduction/background:
I am currently producing a superhero Graphic Novel that will be sold via an Indiegogo campaign, and that will ship in mid 2021. I am seeking to commission a map that can be used as an addition to the Graphic Novel as part of a pin-up poster perk.

Project Scope and Setting:
The map will be a modern day city map with retro/Gothic embellishments, and will be patterned after the two cities of New York and DC’s Gotham. The map will have to incorporate the story elements that appear in the Graphic Novel (above.)
Large scale outline: a large costal city divided by a river and just off a mountain range. One side of the city will be a modified New York, the other side will be a modified Gotham.
The Map will only be a portion of the poster, as the poster will also include,
1) Additional art provided by another artist, of 4 small-scale inset pictures of predetermined city landmarks for the 4 corners of the map (tentatively - a mansion, an empire state type building, a large bridge, a traditional courthouse building,) and
2) Supplemented with text that refer back to map locations.

Copyright:
The map will be reproduced on merchandize for sale, within the currently planed Indiegogo campaign and in the future. Copyright will be transferred.

Deadline:
Rough outline required within 30 days of accepting the commission, and finished product will be required within 90 days of accepting the commission.

Technical:
300 dpi minimum. Jpg, tiff, or png files (whichever one retains the highest image quality upon saving.)
Full color

Transfer of files: Via WeTransfer (or via similar service used by the artist)

Design Process:
Stage 1 – initial concept sketch – once approved
Stage 2 – A 50% design development submittal for review – once approved
Stage 3 – A 90% design development submittal for review – once approved
Stage 4 – Final Maps

Payment:
Please use the below contact information to discuss rates.
Payment will be made via Paypal upon delivery and acceptance of the final files. A $100.00 earnest payment will be made via Paypal to start, if needed, with the balance paid upon delivery and acceptance of the final files.

Contact:
rjsfourthage@gmail.com

Additional:
The graphic novel that the map will be attached to will be associated various online comic and graphic novel entities.