Indoor Soil Help PLEASE

[dwcnoob]

Hello i went and got the ONLY soil in my town, its a tiny ass town. all i got is 50L of peat moss/ 50L of top soil and 50L of Pro-Mix garden mix. can i make a decent medium out of this and is so how i was thinking mix some peatmoss with top soil and pro mix, i need to make 140L in total any help will do thanks guys