What's your budget? If you want to stay reasonable for a new grower, the Mars TS1000 is quite nice. I have a Migro Aray2 120W. Love it, but it's a fair bit more expensive. The HLG Is a great choice as well.
If you have the 2.3x2.3 mars tent, I have the same one. There is enough space for 2 plants and nothing else, or I would say easily 1 plant and room for a power strip, humidifier, venting, fans, etc.... It's a lot tighter in there once you get "the essentials" packed in.
Also, if you need to be discrete and stealthy, I highly suggest taping up all the seams and passive vents. Incuding that nice view port on the front door. All those velcro closures leak like crazy. Same with that nice large port hole in the ceiling. Get your setup dialed, then close off those points and tape around anything going in or out. Makes the carbon filter work properly and you should be able to control your grow environment better as well.
Aluminum backed foil tape on the inside and I personally use Gorilla Glue Waterproof Patch and Seal tape on the outside.