I'm also a big fan of D00M and i really dig the idea i think you should go for it, I advice you to save up a good bit of money for this one. you are gonna need to hire someone that has a lot of experience with detail, please post pictures once it's done!
I'm a big fan of DooM if its done well it will be amazing and in the right place. Just make sure you go to a great artist that can get the colours perfect and it will be great.