love that last shot-
i have found setters to be very accepting of new pups - and gentle - two in the house has been the norm here - three dogs once - probably not again
we have been down to one dog since Christmas - that gets corrected in a couple weeks -
the only advice I would give is just remember to give the older dog some time to his own. the puppy will be so cute and house breaking and such will require a lot of attention - he will naturally get all the attention he needs- take some time to walk or toss a toy around for Parker.
good times ahead - enjoy them