Welcome!! I think that 3 big dogs is a great (starting...tee hee) number!
We have 3 also. Daisy is our 8 yr old Golden Retriever/Yellow Lab mix, Cassie is our 2 yr old Pyr and Sammy is our 3-5 yr old Pyr (he was rescued by AC from an extremely abusive home, so we don't know his age). We've always had 2 dogs in our home, so adding Cassie & Sammy both (in Feb & March) was a change for us, but we love our little pack and now we're thinking that 3 isn't so many after all.
I'm glad that you found us and you'll find lots of support & info here.