Due to space, I like to veg outside. It's getting warm here. It's 60's - low 70's during the day, and 50's at night. I just looked and we get 11hours, 45 mins of daylight, today. I know thats not enough to keep the flowering at bay. When is there enough daylight to not have to worry about that ?
Based on your day being 11 hours and 45 minutes long on March 9th, you'd be around the latitude of Bakersfield if you were in California. And based on your temps, you're probably not in the foothills.
So, the key is when is your last frost? You don't want to PLANT them outside until after the last frost typically for your area. Based on your current temps, I doubt frost will be an issue.
So you might get away with the beginning of May without confusing them into flowering. I'm in the Emerald Triangle area so I'll wait to PLANT them outside until May 15th or so.
More importantly if you want big plants, you need really big pots, good soil, and full sunlight all day. And transplant the biggest, most mature plants you can grow indoors to start.