Well, I don't see the thrips, tbh... but if you're concerned about them at all, I wouldn't recommend potassium soap - that will certainly do a job on aphids but thrips??? And it's also got some oils in it meaning that if you have the problem when you get to flowering, you shouldn't use it unless you want to smoke it. I would instead lead you toward Spinosad or Dr. Zymes Eliminator... they are both organic and work very, very well - and can be used throughout the life cycle of your plant.
Good luck!