overwintering Some general growth questions (winter grow)

I recently germinated some seeds in rockwool and as soon as they popped I moved them into 1 gallon nursery pots and put them on the roof under shade cloth.
 
Here's the list (red didn't germinate or died):
 

 
Here's the average monthly high/low temps in Oakland:
 

 
I realize now I probably should have put these in 3-4" pots to develop a nice strong root ball, but I did not. The seedlings seem to be doing well and at this point all have their first true leaves.
 
I understand that over the winter, growth should be slow with the lower soil temps. I will be looking into building some type of small greenhouse, but I may not get to it.
 
My question is - will these plants need to be potted into something larger than 1 gallon before next spring?
 
 
Ideally the roots fill out the 1 gallon pots without getting too root bound, and are ready to be potted up into 5 gallon fabric pouches in March. If I can have some 12-18" strong plants by March, I should be looking at very early harvests and a bumper crop in 2019.
 

1 gallon pots means you plants will max out at around 1-3ft depending on var. It is ok if they get rootbound. just untangle the roots when you transplant.
so to answer your question..no

Oakland CA plant out date is much earlier than most of us. like mid February.
i do think you started them a little bit early but that's fine.

juanitos said:

1 gallon pots means you plants will max out at around 1-3ft depending on var. It is ok if they get rootbound. just untangle the roots when you transplant.
so to answer your question..no

Oakland CA plant out date is much earlier than most of us. like mid February.
i do think you started them a little bit early but that's fine.

Click to expand...

 
Cool, thanks. Yeah I know my timing isn't ideal, but I really wanted to get some plants going (I didn't start ANY this spring). So even if they are slow going, I want to be ready for them to explode come (our very early) spring.