Id choose either 3rd weekend in March or the first or third in April. IMO there will be fish biting almost all the time in the spring, but you may just have better results if you plan around the moon cycle, especially for a spring trip. They wont always be in spawn mode when your talking about going meaning you may do best in 15 to 20 FOW in brush and still deep, but you can sure find some good fish at the times you are talking about. Come on warmer weather and spring.