lots of peope do what you are doing.
convert their existing lms files into xlights *.xls
now add rgb effects to arches, eaves, megatrees.
finally use xlights to schedule your show.
you can also produce conductor *.seq files and run your show on the conductor
you can also produce pi player files, *.fseq and run your show using a rhaspberry pi.
you can also export the completed lor file as lms and bring it back into LOR and run your show from there. caution, lms files will be large.
example a 3 minute wizards in winter is approx the following
xseq 45mbytes
conductor *.seq 45mbytes
pi player 8.fseq 45mbytes
lor *.lms 800mbytes
i will have 20,000 channels this year and will be staying with xlights as my scheduler.
thanks
sean