Wedding Cake Auto - Barney's Farm

AFTER SAVING THE LAST DIARY WITHOUT COMPLETING IT PROPERLY I THOUGHT ID GO AGAIN. DAY 1 23RD MAY! After using this site a LOT recently for information i decided to document my efforts here too. I attempted a grow 9 years ago in a small 40x40x60 cabinet with a bagseed. It went fairly well and manged to grow some buds. However 2 or 3 weeks into flowering the light fell from the top and smashed into a metal cake cooling rack i had set up to support buds. Being young and skint, that was the end of that! Soo, here is round 2 some years down the line. My set up is a 40x40x100 black orchid tent. I know to some this is a veg tent but for my space its perfect. I have a 4" inline exhaust with a 4" Rhino Pro Filter. At the start of the grow i had the filter inside but now made an air tight box to house the filter oitside the tent for max height. Using a 125w Dual Spec CFL (identical to the one i used 9 years ago) for seedling and early veg but plan to get an Led but worried on the light burn with my grow height I have started it through the normal process. Soaked for 16 hours, germinated on paper towel on top of PS4 for warmth and then into soil. Have a pots worth of light soil in the middle of its final pot of all mix. Have done 24 hour light for the first 3 days and now switch to 18/6. Growth looks good so far (3 days in). A small tear on the first leaf but think its ok. Have been slowly covering stem over with light soil to get it level with rest of soil and hope more roots shoot from there. As said above i am looking to buy a Led light. Have got my eye on a few Marshydro 300, Viparspectre 300, viparspectra 450. I need some advice on if i have the height and if they will be too powerful for my space.