Thanks for all the posts, everyone!
Our rescuer told us that Jaco is already famous…his nickname is now "The puppy formerly known as Mogley" since we don't want his fans to wonder where he disappeared to...
Does he seem maybe just a tad bit active? HAHAHAHAHA!
We've really prepared ourselves mentally and physically for the change…particularly thinking about how exactly to proceed with integrating Jaco into our pack. Fortunately we have enough love for Juniper and Jaco Juniper will always be our first and raising her has been like writing a novel. Since that was a once in a lifetime feeling (first time dog owners), we know this time around will have a lot more "seen this before" for us. And while we'll want to drown Jaco in love the first day we know the best thing is for him to get acquainted with (not overcome by) his new home and pack. Since that's a lot to take it we'll have to not let any one element become overwhelming. Thankfully he has a hold of crate training already so we know he might retreat to his crate and we'll just let him be and hold Juniper back if she doesn't get that he wants some time to decompress. All we have planned for the rest of the day that we pick him up on, tomorrow, is walks and a little training with treats if he's interested. And that'll be after the original introduction walk with June and Jaco, then coming inside for an introduction to our home, then a nap (since we'll all be exhausted by this point I imagine).
It will be interesting to see how Juniper and Jaco interact...she's played with my g/f's parents' Basenji so we're familiar with some of the noises they make when playing aggressively, the banshee shrieks in particular. But those noises were mostly from the other B who's male and much larger (overweight)...and in this new situation she'll definitely be dominant because she's very athletic and loves to play aggressively and of course her competitor will be a clumsy pup who needs to be shown the rules. While he is very active she is developed and active...so we're apprehensive that she might get a little too rough at times...so that's great to know those things in your last post, tanza, thank you.
...still trying to figure out how best to walk these two B's with one being a small pup (equipment, method, training, etc.). To simply things we're going to walk them together but on separate leashes (I'll have one, my g/f will have the other) as much as possible and also walk him alone on separate walks often until he starts getting how we want him to walk/the way we walk Juniper.