I wouldn't even waste my time or money with the CFL's
That LED light isn't the best but would be way better than the CFL's, I wouldn't suggest growing more than 1 plant at a time under that light.
GT Hydro, their pricing often is a bit higher than other places but for the most part pricing is much of a muchness and right now during the lockdown you are not spoilt for choice either.
With autoflowers, anything which negatively affects the plants growth early on will negatively affect your yield and can do so in a drastic way. Lighting on an auto can be the difference between 20g dry and 80g dry for an autoflower, or even a delay in getting good lighting onto a plant.... Autoflowers really are not a good way for beginners to learn how to grow as it does not offer any room for error. Any errors will e felt in the overall plants size and yield.