TheMNWarrior :
I just built my gaming desktop and was wondering if I Should download windows 10 onto my new desktop until I purchase windows which could be around months time.
Yes, you can. Be advised it is still very much a Preview, and not recommended for a primary OS on a primary PC. There may be issues.
Having said that, I've had it on a secondary PC since day one, and it is quite stable.
And when you get whatever OS eventually, it will be a full reinstall.