Hey there good question
I tried this one time it worked out just fine
Your plant looks really good in the outside photo but the inside photo it looks kinda beat
Just remember it’s still early in the year so anything started outside probably has not experienced very extreme light intensity yet and I’m assuming your giving the plant longer days of light than outdoor unless your straight flipped it to flower
So I would say to start the plant around 250 to 350 umol’s just at 1st especially if your starting the plant with 18hrs in the tent that doesn’t seem high but 18hrs straight at 250 to 350 is a lot compared to outdoor in early spring cause outdoor you have a much shorter days than 18hrs of full brightness
I would slowly increase the light intensity to the range you would like to start flowering everyone is different depending on how they want the plants to act durring the strech
After you get flowering started and the plants aclumated to being under the grow light you should be golden and things will run like a indoor grow at that point
Also remember to have good air exchange so the plant has co2 to breath
Good luck