Here's a readily accepted way to accomplish what you need. Do it this way and you can avoid calling Delta Intl awards until you are ready to book the exact award flights that work for you.

First, go here and read this thread: award ticket buckets on Skyteam airlines for F+ . Read. There you will find all the award codes for Skyteam airlines. For example, for Air France it is A for first and O for bizclass, and for CO it is E for first and G for economy.

Once you know the award bucket codes you want, then go here:
Class Availability Website and enter your destination, dates and the airlines you want. That will bring up results with all the bucket codes available for those airlines for those flights. Use multiple airlines at once... you can outbound on CO for one leg and another Skyteam for a second leg, for example.

Don't see an award code (i.e. like A2 for AF means 2 award seats available) then change the outbound or inbound date and re-search. You are lucky they are Delta miles, because you can use 100k DL miles to book first class on other Skyteam members, but CO miles can only book biz with their 100k miles... go figure...

Once you find the seats, immediately call Delta Inlt Awards at 1-800-323-2323 and tell them what you want and they will love you for making it so easy for them. I have used this method 3 times in the past year to painlessly book/re-book two A seats on AF from IAH to CDG.

Good luck... and welcome to FT! ^