In my opinion 1 gallon pots are too small to even think about getting anything more than 10gs dried and thats still if everything else is done perfectly I wouldnt want to flower in anything smaller than a 3 gallon if you really want some decent sized buds. (Bigger Roots= Bigger Buds)
Secondly you want about 110 real watts per plant inorder for them to really thrive. Youre saying that youre gonna veg 2 plants out and then either take the female or the best of the two if they are both females but while they are vegging if they have to share 90 watts they are not gonna get that big.
I honestly would look into getting yourself a clone that you know is gonna be a
female or fem seeds so you can begin to train it from very early with some LST or topping you could significantly increase your yield on that single plant alone
so I would highly suggest looking into..
1. Getting more wattage if possible (if you really want to veg out two plants in there)
2. Get minimum 3 gal pots
2. Make sure what you're growing is a female from seed or clone (so you dont waste time and effort)
3. look into Topping, LSTing or FIMing methods to increase your yield while keeping your plant within your growing dimensions
Hopefully this helps some
