You are invited to join the journey, but we also want to encourage you to seek God's will for your life, and ask Him what it is that He wants YOU to do. Not everyone is called to adopt, and those who are, are not all called to adopt 5 at a time, but God does have a plan for each of our lives.
While you may be excited by the story He is writing in our lives, we encourage you to seek His will for your life, and then step out in faith to follow Him. You might be terrified - especially if it's nothing like the plan you envisioned - but I promise you that there is nothing more rewarding and exciting than following Jesus where He leads you.