Posted: 11/05/2017 at 22:26
If they're going outside, i'd wait a few weeks. You need decent night time temps for them. You'd only set them back if you put them outside now. It's always a case of getting the timing right. I usually sow in 3 inch pots, then repot into about 6 or inch pots, then into the final size of about 12 to 14 inches. Unless you have a greenhouse, it's difficult to keep plants going until they can go outside. Too long in a warm environment makes them a bit spindly, and they're less able to withstand outdoor conditions.
I'd give them another week, at most, in those pots and then get them into a final one. If you put them outside, make sure they're quite sheltered, and only do so for a few hours. Wind can dry them out and damage them as much as sun. The weather's been a bit tricky this year - hot then cold - which makes it harder for growing less hardy plants of any type. They'll be fine though