The bigger ones look fine and the two smaller need to be closer to the light. I only say this because they are very over stretched right now. I have never grown in that stuff you are using but it it is easy to transplant at around day 14 or so I would transplant those and bury much of those stems. This will give you a larger root system as your entire portion of the stem which is buried will start to produce roots. You will also have a short stem now and can control the amount of stretch with your new light system.
Hope this helps, good luck with your grow and welcome to RIU
Cane