Keeping them inside longer...

[Merediana]

... or getting them out as soon as it is warm enough?

I'm not talking about planting them out because we are still 6 weeks away from our frost free date, but the next 2 weeks should get quite warm for april with lots of sun and 57-68°F over day and never below 44°F over night.

Should I start hardening off the plants? Should I leave them outside all day as soon as they can tolerate the sun? Should I bring them in at night?

Questions over questions... From what I've read in other online communities there seem to be lots of different opinions so I don't know what I should do. Some say keep them inside till it is even warmer outside or they'll slow down in growth and never recover from it, others say the plants will benefit from it...

My seedlings are now around 5 weeks old, some start developping their first buds.