Lighting

I'd personally grow a photo in there, top it, SCROG it and flip the light when it's still reasonably small.  It's actually quite tough to train an auto to have such a low profile as all you can really do is bend the stems.  Easier when you can cut and shape to your heart's content and hopefully have a little more control over the size of the plant. If you're going down the auto route, try to find a small strain and keep the light as close to the canopy as is safe because some can get really big if left unchecked.

@QFMAC Hi mate, been thinking about my oil rad again and just want to see if you can answer the following:    I’m going to plug mine into an inkbird for when lights go off so I can maintain 20 degrees without guess work on the rads own thermostat, so when the inkbird is clicking the rad on and off, will the rad only use power when it’s heating and clicked on, or is it still drawing power constantly whilst plugged in and switched on at the mains even when it’s not heating because the room is at the required temperature? Thanks 

I would take the autos. Throw them in the bin and use the space for the cuttings no chance the autos will compare  

To answer your questions in order:     That really is fairly small, suitable for 1 plant only. Tall is good, after you install carbon filter and light hangings it's amazing how little vertical space your left with. Taller the better imo. Could get two plants in there possibly but I'd personally plump for growing one well than two badly.     Not bad thing if your a beginner. Personally prefer photo periods. Just remember after the starter cup you'll need to transplant into the end game pot rather than potting up.     If you need advice on what nutrients / soil to buy you'll need to elaborate a little on your plans. But nothing fancy is needed, I've grown successfully with basic soil purchased from Wilkos.      This will suffice for a tent that size. Air extraction is primarily to replenish CO2 used by the plant. Providing your fan has the capability to extract the total tent volume in under 5 minutes this is adequate. I've just adopted a second tent which has a 4" inline extraction far bigger than yours. Additional benefits of air extraction are to remove excess heat / moisture but I'd suggest a good quality 4" fan would easily cope with the tent size you've mentioned. There are too many bullshit calculations online regards removing 10% air flow rate for every twist, 15% for every corner. The only thing that may impede air flow is the carbon filter. Don't fuss over this, 4" inline fan is fine.     So many to choose from. Just don't bother with oscillating fans. Not required. If you're going for a 6" fan likely you'll only need one for a tent that size.     Find this hard to believe. Acts like a 800w HPS ? I've seen similar cheap lights, if the current draw is only 100w it's pulling under half an amp. Sure it'll be fine for a tent that size but don't kid yourself it'd replace a 800w unit. Need to elaborate here really on the lighting for me to comment further.     Ideal but ideal for what. Seedling stage / Veg stage / Flowering stage all have different requirements regarding humidity and temperature.  Temperature is a bit on the warm side but I'd rather have it slightly too warm than too cold.   Quite hard to answer specifically any of your questions as you've provided very limited information and no pictures. May I suggest starting a grow diary, anything you want advice on show pictures and give as much information as you can. I suspect your just starting out so I understand your pain. But a pictorial diary is the very best way to get the most from these forums as it holds other growers interests.   Kind regards,   Poisonata