Thanks @zipcode , @Nan_PA_6b @Labradors2
Maybe I didnt state my issues clearer.
I will prefer a wall planter as the balcony itself is not very big.
The side of the wall where I want to hang the planter is 32 inches wide and I am willing to go up to human height in staking them up.
You can also see the type of Tomato plant that inspred my thinking - this is a PATIO PRINCESS
I will attach a pix of the type of planter pot/ system i will prefer
Its a wall hanging planter.
If you scroll down
THIS PAGE, you can see the sizes of the potting container