Auto Gelato - First Indoor

Hi welcome to my first indoor grow! I chose a super budget setup with basically every setup option being the cheapest in their class, even the seeds are cheap but I've been a happy customer on their webshop for other stuff so I hope their seeds will be just as good. 3/3 seeds germinated in 48 hours using the paper towel method, before putting them in the paper towel I had them in a glass of water for 8 hours. Then I put them in 100% coco coir as seen on the picture. Alongside this strain I will be growing 2 other strains, I will put 3 or 4 plants in my tent (I haven't decided yet, feel free to make a suggestion) and will pick the strongest seedlings of every strain and continue with them, and if I go with 4 plants one strain will get 2 plants. My only concern so far is the Mars Hydro TS600 light, within an hour of being on it already gets insanely hot, I can't even touch the metal case, it's THAT hot. Please tell me if this is normal and if this light can cause a fire and if I should do anything to cool it (tent temperature around 25°C/77°F).