The first issue you need to deal with the pH of the soil and water. Otherwise you are flying blind. pH issues will ruin your grow and quick. Seriously, don't waste your time. A good pH pen is $20.

Other issues:

You should not start in big pots. See the link in my signature for some info on the importance of repotting. If you are growing hydro then this is not an issue.

Don't over water. Better to underwater than over water.

More information needed on your LED to comment. Likely this light will do well for veg. Unless it is a quality LED it will not take you through flower and even if it is quality you will benefit from additional lighting.