we have 4 controllers in same campus and we need to have actiive active solution for Ap fast failover for morethan 1200 AP we need to hhave 50% of APs to be on Controller 1 for example and the backup for them is the controller 2 and we need the other 50% of the access point to be on controller 2 and the backup for them shall be controller 1 ,but we have in oir case 4 scnarions so where shall I terminate access points and what is the best license disterbution that I shall do ,shall make alllic on controller or shall I diterbute the lic keys?