Rottweiler

Im just geting into breeding Rottys, Ive owned and loved them for about 12 years and having about 7 Rotts in my life but all rescued, adopted or never bred.

I have had my male sence birth for 2 years now and hes tall, savvy, Black and Mahogany, short nose fat head and still isnt done growning.
Now im on the hunt for a female sence my male turned out to be my perfect little man, I purchased him with the intent of breeding so i spent a good amount to guarentee what i got! Now im after a femal with a little extra (also have ad up here) but Sence he has no pups on the ground can he still be placed up for stud? or is that just pointless and should i wait untill hes got pictures to prove his offspring?

Thank you, new to this world- Aut