You can't buy the players you've scouted. You will draft them. If you pick seventh, then six players will be gone by the time it's your turn. There is no way of knowing who goes. I suggest putting them in order from best to worse. If you want bigs, then put bigs at the top...
With players I know nothing about, I like to put them over a 2 or 1 star guy in the list. I'll take my chances, know what I mean.
Also, I would read these forums and read the rules over and over and over and over. Reading these forums has helped me quantify my knowledge of the game. Read.
READ...