[Alexis P]

Calcium tends to come as a multivitamin tablet I've found so can't see it being detrimental to anything also looking at black maca for adding vitamins and proteins to aid tissue growth, may not help grow anything but will help me down the line should I sway towards PM, progesterone will be a fair bit away as sure I read it's best to wait till after the buffing stage before using any progesterone as it can block recievers in the chest, already got some mild budding thanks to having mild gynocomastia ( can feel hard/ squishy lumps/ fibre's under the nipples ) so may not be as far away as I feel ?

Yeah you are not wrong, progesterone there has been rumors here in  the forum is  better taking it after a certain amount of budding will be there (you will eventually notice it after starting feeling hard lump under your areolas).
Wait for 2-3 moonths and enjoy the progress of breast growth, eventually if you see there is a lot of budding then you will use it. Feel free to buy it when you want and use it at a later time