what size bag? 10qtfor soil
what size plants - Just germinated waiting to put them in soil
what stage of plant veg or flower - Veg
what size container - 1 in a 5 gallon bucket inside, others outside
what type of potting soil - Expert Gardener Potting Soil
what type of bone meal, npk? - 6-9-0
after germination, first transplant should be in only soil, no nutes, also like he said you'll need some phosphorus, molasses is a good source, bat guano is another.
Go light on the fertilizer, bone meal needs to be "aged" before it's completely available to the plant so you might want some fish emulsion or cow manure, rabbit manure, etc.
Don't put the inside one in the 5 gallon without it being in other pots closer to the 5 gallon size, otherwise the soil will retain too much water and will rot the roots.