Hey,and sorry for not replying to you before, for some reason I did not notice your thread..
Happy to hear you managed to get the board working, but if you need any help just let me know. I have subscribed to this thread so will get an email when you reply so should answer abit faster than 2 days
cleanflight is largely for miniquads but it can still be used on a fixed wing plane but its relatively undocumented. I meself have never used cleanflight for my fixed wing planes so might not be able to offer much help. The best documentation on a fixed wing is at Partiks blog but he is using baseflight firmware. So hopefully that will be able to help.
So if you run into any problems I can try to help as best as I can and lookking forward to seeing how your build progresses