Go for it,if you have contacts,ref's,etc then yes go ahead and give them out.Anything to do with this beautifull breed is going to do it good providing your detailes and contacts are genuine and helpfull.
GSD's have been our breed of dog for the past 30 yrs and we have had many happy yrs with them,trouble free and well behaved.I am a BIG believer of a dog is what you put into it...........and as long as you treat them with kindness.respect and trust you will have a loyal soulmate for life. Regards