Define correct.
As long as you read the main "tion" books in order, reading the other Spotlights and Stormbringer is unimportant, they fill in the Furmanverse, but are not necessarily required reading.
If you must read them in the "correct chronological timeline according to in story events" then I hope you have all the Spotlights on hand...
I'll try and figure out the best order I can and post it tomorrow.