when is seedling ready for transplant?

Hey guys, my seedling is about 2 weeks old (from seed) and it has its first set of leaves. I germinated with paper towel and now it is growing in a peat pellet.

as you can see in the picture, some roots are poking out. this is only on one side of the peat pellet.

when is the right time to transplant this?

Thanks

 

[the green bandit]

Hey man, she's more than ready to go in some dirt!

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[Dan2234]

Thanks! I will put it in its final 3 gallon pot asap!