sure you could do that but to be honest it is best to leave is as , the reason why is you already started with teh wizard and if you start changing the ACL names pertaining to Ipsec you will also need to carefully work with your crypto map outside_map statement as well in order to have the tunnel functioning properly, all this needs to be done through the cli, ASDM will not give you that option of picking an ACL name for when creating tunnels.. that is why is called wizard, it does everything for you, on the other hand if you want to be more specific with named ACLs then you need to start practicing cli.
Rgds
Jorge
Jorge Rodriguez