Hello everyone,
These are my 4 new bonsai. I would like to keep them in about the size pots they are in now, a max of 6x3 pots due to the fact that i likve in an appartment and have a small area to keep them in. Any suggestions would be very helpful. thanks in advance

2.5yo Zelkova

3yo Dawn Redwood

3yo Dawn Redwood

2yo Japanese black pine

3yo Weeping Cherry(kinda worried about that small bottom right branch, let me know what you think.)