To the OP: You've got some experience already with your auto grows so you'll easily transition to photos. I believe that photos might be a little more work, not to mention that the work is dragged out longer.
I've completed two photo grows (my first 2 grows) and I've been very pleased with my results. I am, however, switching to autos for my 3rd try.
I think I veg'd my photos a week or two longer than I should have; they really do 'stretch' during the initial flowering phase and you must account for that need for space which can be surprising if you are indoors. Accurately calculate or visually imagine the finished, flowered plant in your allotted space and figure that half (approx) of the space is veg. When your plants reach this stage, FLIP.
That stretch also brings on the need for individual branch support as the harvest draws near, a task that can be challenging to keep everything supported, lit well and fed. The resulting buds are immense, so the work pays off. I have read that photo strains result in 'stronger' or more potent (higher THC) buds; I believe that there are plenty of auto strains available that will match THC levels with the best photos.
I'm trying autos for a shorter duration grow with respectable harvest results. Some of my photos went 23 weeks in my indoor tent (microscoping trichomes) awaiting the 'perfect' harvest moment. I'm planning to blast these autos with TLC, including defoliation, LST, maybe a FIM here or there, etc, etc, and do this in about 14 weeks or less.