I created my own hybrids from various seeds over the years.
That plant is a mostly indica,probably about 60-70%indica,30-40%sativa.
It should give about 450 grams per square metre if all goes well so from that one plant considering its size i hope to get about 100 grams dried from when its finished.
I would be a bit gutted if i only got 56 grams from a plant that big
Giving the plants only sips of water during the week,just enough to stop leaf droop and only flooding them on nute day,never spraying them,and keeping the root ball fairly tight will produce very resinous buds which increases their weight.
I have seen a lot of very light and fluffy bud that once the water has gone weighs next to nothing,this is imo from a lot of watering.
Make the plant think that there is no rain by never spraying it,and only giving it sips of water apart from the main watering day once a week in good conditions,my cupboard is to hot so i have to flood twice a week.
This technique makes the plants produce more resin and makes the buds heavier and tighter,my buds are already solid
I think your plants are looking fine.I dunno how big they are though so i cant give you an estimate.