British Columbia: Gloriosa seeds started - ?transplanting of.

Hello,
I have started a flat of Gloriosa 'Rothschildiana' seeds. I had very good germination, more than what I had expected. I am assuming that there are too many to leave in the flat to grow on. I was going to just plant the whole flat of them into a large container and grow on, but with the production of tubers, it probably will be too crowded?
I had read somewhere that they might not like disturbance after germinating, not sure?
There are probably about 30-40 in a flat 10"x11".
If anyone has any idea or helpful suggestions, I would greatly appreciate them.
Had thought I could divide it carefuly and just slide sections of them out into separate containers and risk losing some?