Do you really expect the sun blasting in may in your country? I am afraid that sun will be hardly visible through clouds. And rain will cool them down to often. And they will be mostly frozen, because average night temp.in may in your country is 9C.
My friend, your description sounds like you live in Africa. I live souther than you, but nobody here wants to risk expencive auto seeds outdoor. To much weather lottery even for a single crop in the best time of the year.
How will you manage to start seeds on april 1, use 14 days of CFLs and then go out on ay 1? I miss 14 days.