The 7005 support starts with AOS 6.4.3.x. Unfortunately all the ABG APs cease code support at AOS 6.3.x. So you will need new APs to use with a 7005.
7005 controllers, in and of themsleves, do not come with any licenses. It's best to talk to your vendor or partner for what you need, but in general you need the AP licenses at a minimum. If you want to enable features like firewall, wireless intrusion, etc, you will need to licenses thos features as well.