Bigger pots?

Currently got 1 plant under (2*35watt CFL'S 6700k) its coming to the first week under the CFL'S with an enormous amount of growth- Happy Days! The plant is about as tall as an Iphone and 15-20cm across in all directions. Its in a 0.7 liter pot. Tips of the rot's are just starting to show at the bottom. My question is that there have been some many changes in this girls environment so far is re-potting it into a bigger pot just going to stress it out more than necessary at the moment?

Thanks in advance- Stay high

If the plant is using up all the water in the container in a 24 hour period I transplant. I start in the same size containers and it usually takes 3-4 weeks from seed before they are ready for a transplant.

Some pics would be better so a better judgment could b made r they autos?

I use 5 gal pots, I think its like 18 liters. so ur like in a red party cup

The bigger the pot the bigger the pot.