it's always important when you register or buy a domain, that you should first go for the possible keyword and the daily search rate in Google search engine. I hope that helps.
Since I don't know what your plans are for the site, I'm not sure how to advise you. I will say that the name is too close to odysseydawn(dot)com to be of much use imho. I went and looked at odysseydawn(dot)com and I don't think there is any way you can out rank it, or will even be able to come close to it. Just my two cents.
I can that the owner wants to sell odysseydawn.com for 40,000$. Do you think I could sell mine for a few bucks?
In choosing a domain make sure that it is relevant to the business you run or to niche you are targeting and then make sure that is is related to the keyword to make it sense.