How many plants per light?

Running two 400 watts want to do 8 plants.

In a shower, probably 3x7.

Trying to do 4 autos, then while those flower I veg 4 other plants, then once the autos are done I put the 4 I was vegging for awhile into flowering. 2 weeks before the autos finish I will start 4 more seeds and those will have 2 weeks of veg then will be put into flowering with the other 4.

I feel like this is the most efficient way to do the grow. Am I correct?

Sounds good in practice but,
you won't need to veg for 8weeks unless you want giants or big bushes,
don't rely on plants finishing on an exact date, it won't happen. . . .
perpetual growing is very rewarding but not have to be very versatile and have some spare space handy.
if I knew what I know now kinda thing. . .
good luck

Its not about the number its about the size. seeds take a week to germinate... I would seriously veg them for at LEAST 2 weeks.

Perpetual grow = perpetual work.

i worked for 3 years to finally nail down a perpetual grow schedule, very nice once they get going.

I get 6 plants under a 400 with good results.

So run the autos then throw the others in more towards the end? I mean couldnt I veg 4 non autos for 8 weeks and then throw them into 10 gallons when the autos finish, veg another week then throw em into 12-12?

Whats my best option?