what you get is as easy to predict as the catch on a fishing trip, might be awesome might get nothing
but 2 oz don't sounds totally off, if you do your part (mostly leaving her alone to do her stuff, she knows how) keep her green and keep it simple
you do have 7-9 top`s on her that each easily can produce 10g of quality smoke, if you get everything optimal
can you keep the temps under 30C for most part and keep her with enough water and the right nutrients with out over do it, you should hit 1-3 oz
but agin its just a fools guess, in RL you probably get 1 oz of top dense nug´s and 1 oz of bottom flimsy bud´s, now you have a 250W and high temps and not a lot of experience, but then agin you might have the right genetic and you end up with a monster that yield twice of that, agin if you don't fuck up along the way, treat her like a baby in flowering
another thing, you don't need intake vent, as long as air is pulled out and there is some passive intake holes physic will take care of the rest, air going out have to be replaced with sum thing, after all we are still on Earth, so maybe use both as out take vents and just keep enough passive intake hole`s open, maybe even use some ducting if you have any around from the passive intake holes to "collect" fresh air near a window/opening ?