Raybo,
I was very sporadic with starting seddlings this year and I'm paying for it as some of the varieties I want to plant are still 1-2 weeks out. It will be a progressive planting this year as was last year. I started seedlings as early as Jan. 1 and was sowing my last batch early Feb. Check this out..... I have drywall scraps laying around all the time as I'm a drywall contractor so I made these first line of defence sun blocker boxes with drywall scrapes.
Here is my comparision of my home made seedling mix and Light Warrior. The green and healthy ones are in the LW.
Damon