i know this is almost impossible to determine but any vet growers have a clue about how much I’ll yield off these 5 girls, currently around day 9 of flower running about 495 watts of Led

It's kinda like guessing how many jelly beans are in a jar.. you can see the jar filled with jellybeans but you cant actually count them until the contest is finished anyways.

Actually there is a way to find out how many jelly beans(or m&ms, etc) in a jar. You would need to calculate/est. the volume of said container (Pi * R2 * Height {at top bean level height not top of jar}<if cylinder>). Then you would need to get a good estimate of the amount of volume one jelly bean is. Then divide that volume value of the "jar" by the number of unit volume space that 1 bean takes, and fudge it up or down to make a fairly decent estimate. I hate math but I love it too. I never had good math teachers growing up.

Another way to estimate the number of jelly beans is to average a large number of independent, random guesses. This method has been employed in several different ways over the years, and usually the average of many guesses is better than any single expert opinion. The name usually applied to this phenomenon is "the wisdom of crowds." If 100 members posted yield guesses, the average of those guesses is likely to be within a few percent of the actual result. Even the average of a few guesses is likely to be better than any one expert opinion. In other words, it is possible to accurately estimate yield if enough of us guess.