Autos pot size ?

I use 5gal cloth (same as 3.5 gal plastics to me) or 3.5 gal standard pots, seem to do ok for me...

4-5 gallon/15-20 litre pots are great for autos, with 18 litre air-pots being my favourites.

I might go for 11 in x 14 in. Bigger the better, Yes. But if you go bigger I'm not sure that the tent can handle it.

I would suggest going with 3-gallon pots, for the space and the number of plants you plan to grow, this will be perfect, I myself have had the tendency to overcrowd my growing space and it turns into a jungle.

an even number of pots will fill a square or rectangular space better unless you have 1 unusually large autoflower.. .can always prune back if it gets too dense and dial back next time. I bet you can fit 6 in that space easily enough and possibly 8.. 3x2 or 4x2. 40cm x 40cm canopies/footprints would be 8. Size varies per auto more so than photoperiods on average. they are smallish plants. It's less than 50cm x 50cm most times. Figure 1 gallon per month growing. 3-4 gallons is typically enough for autoflowers. There are other factors that would make you lean toward smaller or larger pots.. Probably safer to err on larger size, unless you are doing multiple fertigations per day method.

Hi! I’m growing 5 Afghan Pearl CBD plants in a 1.2x0.6 m tent, using 13L fabric pots. You should go for at least 13L or event 20L pots, bigger is always better ;) Good luck with your grow!