Tent Size

I am a new grower with a 24x24x48 inch tent using 300watt led light. I have 3 maturing plants but i want to ensure space is right. Two plants seem tight right now in there. Should i just grow one in the tent or is two realistic?
 
I was thinking the same. White widow is what they are. Not room for a bigger tent however it is already in a closed off dark space where i can continue the other two outside of the tent with two 150watt led bulbs from lowes. Each one is a little behind the other it looks so maybe as one finishes in the tent i can move another one in. I know tent would probably be the best however. Think that would work ok?
 
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