update:
just finished transplanting girl #1
first i flushed it with 15 liters of pH'd water (my tap water is around pH 8.5 :wtf
then i gave it 1.4 liter of pH'd mineral water with 0.175 teaspoon of blackstrap molasses disolved in it.
then i let it sit, while i arranged the new home - an 11 Liter pot, in which i first put a 5 cm layer of hydroton with a bit of lightsoil above.
then i took the plant and rapped a nylon bag around its soil and above it i placed a cardboard which i cut to the middle and added a circular cut in the middle to allow the stem some room.
then i slowely flipped the pot while suppurting my hand below the cardboard - (it was heavy as it was saturated with water).
then i pulled the pot upside - it slided out with ease.
then i pinched the roots a bit (i hope that was right of me to do) and placed it in the new pot, covered the gaps around with new soil and returned the pot to its electric sun.

pictures of the roots and the plant are attached - it appears that the purple color climbed and reached new leaves - it has some beauty to it i must say...

if all goes well i will repeat the opearation with girl #2 tomorrow