looks great buddy,
it certainly looks like your going to have pretty big seeds, if the calyx have split open already and you can see the green seed then chances are the seeds will be on the big side, i think thats what i can see in the pic, looks like mine when the seed pod splits open after about 7 days, some crosses i make dont do this and seed pods stay closed until the buds hung to dry, i find fem pollen tends to not produce seeds that split the calyx open, but when i use male pollen pretty much every time i cross a strain it splits the calyx open like that.
so looks like you done a good job my friend, well done. the first cross will be the most stable so if your just after a decent strain then leave it at that, but if you grow them out and find you have 2 or 3 pheno types and the 1 pheno is by far the best then work with that, what you can do is if you do find you really like the 1 pheno type then you can get that pheno type in seed form by taking clones from that 1 you like and turn one clone hermie and put that pollen on the other clone, that will produce seeds of that 1 pheno type, but if if you wanted to make regular seeds of that pheno type then it takes several grows to make it stable as you would have to keep back crossing each new batch of seeds with that 1 pheno type until your happy with the results,
what i did that with the strains i produced i find it takes about 2 years to make a strain fully stable, so you have a few options,
with the split calyx you have it might look like the seeds are ready sooner as they brown quicker due to being in the open, but the part you cant see will still be green,
as for the amount of seeds you get it all depends how many pistils you put pollen on and how many got pollenated, a whole plant will produce thousands of seeds depending on size, but from buds i find i get anything from about 10 seeds upto about 40 seeds depending on bud size.