Need lights info on growing indoors then transferring outdoors~

Hey everyone, I can tell already that this year is going to be a late spring with lots of rain, and I am looking to start growing my plants indoors before I transfer them outside.

I just want to veg my plants for about a month to get a head start on the season. Then let them continue to veg and flower as if they were never started indoors.

From what I have read on here, you must be very careful with this or the plants will flower right when you put them outside, then reveg, and flower producing not so good bud.

I am curious to how much lights I should be vegging on, knowing that when I put them outside they may be getting about 10 hours of sunlight per day (in late April - mid March).

P.S. I am not a hardcore indoor grower. My property is bug free, the well water is always pH perfect, and I just seem to have a green thumb when it comes to growing outdoors. I will be using a standard fluorescent light fixture for the indoor vegging

It doesn't matter how many hours the light is on in vegg. What matters is how long the outdoors night length is. If you ran the light at 13 hours and the night time was 12 hours long they still will flower.12 hours and less of darkness they will flower.You should continue to vegg 18/6. Mid march late April is to early in hours of daylight to make a easy safe transition. I wouldn't go out untill mid may and still have a light interupt the night hours untill at least the first week of June. Summer soltice is June 22. The longest day of light. It goes down after that. If you go out as early as you say, you will need to interrupt the night time with light. It doesent take much and can be a small row of 30 watt candecent light bulbs to break up any dark time over 12 hrs. You could run them til midnight on a timer and you will be fine. They really only need to break up a 12 hour dark cycle for an hour on.

Start your plants for however many hours of light the outdoors will get when you transplant them. from there they can finish vegging and when its time to flower and there are less than 12 hours of daylight they will have a smooth transition.
check this site out: http://www.calendar-365.com/calendar/2012/March.html
that will tell you all the info for the hours of daylight. hope that helps.