As far as I know you just need to add AP licenses and MC-VA licenses on your existing controllers, regardless if you are using Mobility conductors or not. Explained below the different license types.
https://arubanetworking.hpe.com/techdocs/ArubaOS_8.10.0_Web_Help/Content/licenseguide/lc-typ-usg.htm
This video might also be helpful for you (if you do not use conductors, ignore that part)
https://www.youtube.com/watch?v=jSPYvfhs0Rg
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Martijn van Overbeek
Architect, Netcraftsmen a BlueAlly Company
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