You may be able to get them outside earlier. I have found that after a certain time inside the plants tend to get spindly and do not survive as well outside. Any melon type or creeping plant I don't like over 3 to 4 inches. And 2 to 3 true leaves (not seed leaves). Matos's , eggplants and peppers , I start sooner. Cabbage , broccoli cauliflower, head lettuce 10 weeks or about now I never have good luck with those so I usually buy. Remember a plant like cucumber needs about 60 days to harvest. Planted today 60 days would get you to mid may. We usually are just starting to plant outside then. Too much growth indoors will not give the plant enough time and sun to really root off outside before it feels like it has to flower and produce fruit. It will lead to a weak plat or a plant that has to use its energy to root out to survive and not have enough juice to produce good fruit.
Here is my usual time frame. Melons 4 weeks, tomatoes, peppers eggplant 7 weeks, cabbage , broccoli , cauliflower 10 weeks or about now.