Welcome to BPO, you really did find a great site, one that you will discover is filled with Newfs including the creators' newf Bear.
Newflvr and Barkleysmum should put to rest your largest concern about Penelope bonding with your family. I don't believe your going to have any real problems with potty training as long as you're realistic. You will need to treat her as a puppy in this respect and all you can do is follow the advice above and be patient.
I think the bonding is the most important, for me I include Kali in everything I can, she comes with me to bid jobs, we go out of our way to frequent dog friendly businesses (difficult in CT), and we frequently go on doggy day trips the most memorable being the one at the following link.
http://www.bigpawsonly.com/index.php/topic,10089.msg125008.html#msg125008Quick question, where do you guys live?
Enjoy your new girl and give her hugs and drools from all of us here at BPO.
Tim and Kali