Not until they’re well into veg.
I’d say wait til atleast the first true set of leaves start to pop at the soonest. Now u have city’s. Next u’ll have single leafs pop out then the first set of true leaves. This is when I would start to feed as the roots should be established and ready to start to work. On food I’d prolly wait a while depending on the medium if soil and it’s a loaded soil 3 to 6 weeks depending on how much u water them. Good luck and welcome.
Most good cannabis soils have plenty of calcium and magnesium to last a plant until it gets to flowering. I wouldn’t worry about molasses until the plant is mature. All molasses does is feed the healthy microbes with sugars, of which there will be plenty of as well in new soil.
Molasses is usually used to feed microbes and also during flower. Calmag is not a cure all or necessity. It depends on what is in your medium and the nutrients used.
6 more weeks maybe