let her grow up and enjoy working her, theres along way to go before you even start thinking about studs. i've stated in the past that while alot of these type of dogs start off very keen, as they get older, and the work gets harder alot of them realise there just not cut out for the game. you have a PUP that your happy with, nurture it, bring it on SLOW AND STEADY, and if your still happy with it in a few seasons time, then think about looking for a good stud...A.T.B.
Yokel