Yeah it's a hard hunt to get and a short one as well, I have not gotten to go yet, but I know a guy that did, he said that it was a really fun hunt, they saw a lot of oryx and he shot his the 1st day. He did his DIY, but I think it would be best to have a guide for a 2 day hunt.
You may already have this, but if not here is the NM G&F site for more info:
www.wildlife.state.nm.us
If you have more Q's just let me know and I will do what I can.