Re auto vs static channels - understood. After all, the controllers provide both auto and manual options to support both approaches.
Re static channels - if you're using any variant of SmartZone (vSZ, SZ-100, etc) starting from SZ OS 5.x, you can use my tool DogTag to set static channels using a CSV file.
NB: This is my own development, it's not supported nor endorsed by Ruckus in any way. Test it out on a small setup first and use it at your own risk.
Get it from
http://dogtag.tacoppini.com