I have been running Champion Spawns for a while now and always advanced the spawn when I reached the 3rd level. Mostly because 3rd levels are irritating (due to spellcasters) and by that time I feel I have a good handle on the spawn and a death won't cause too much regression. I am just wondering if advancing it on a 1st or 2nd level would shorten the timing significantly. Quick completion is the priority due to me being solo and completing before a raid can get organized.