I'm probably somewhat near you on the west side of Michigan. I start vegging around middle to end of April and my ladies go out memorial weekend (May 25th).
Like Seawood said if you plan to start vegging in the next couple weeks a cheap grow light would be a good idea. Check out a sunrise/ sunset calendar (Google) and veg to that schedule. On May 25th for where I'm at the sunrise is 6:10am and the sunset is 9:10pm. That's exactly what I set my timer for when I start vegging mid April, so when my ladies go out they are not confused. Last two seasons this is what I've done no problems, the calendar is helpful to me at least.
Not sure what pot size your planning on for outdoor or you going in the ground? If pots, I'd recommend going with at least a 30 gallon if starting to veg mid April. Otherwise you'll be watering every day with a smaller sized pot. But at the same time 30 gal pots are hard to move around if needed, particularly near the end of the season if you trying to keep them out of the rain/ dew.