Hey there! She's a big'un that's for sure! At this rate, and with proper light, you're looking at about 3-5 oz. She looks pretty healthy. at least at the root level. As you notice the lighter color is towards the upper parts of the plant, indicating it is not a root problem. Rather, its a more likely a light deficiency issue or nutrient issue. You can perform a slurry test to rule out the nutrient problems. If you are not getting enough light, you can consider supplemental lighting.