new to beans - questions

[tnkrer]

Decided to add beans to the garden this year. I am going to plant (All seeds thanks to Gary)
Flamingo (Tormato's creation from what I read on gardenweb, cool) - pole
dragon's tongue - bush
good mother stallard - pole
blue lake - pole

Reviews have suggested that these do well in northern climates (e.g. cooler summers)

Most "advice" on web said not to transplant the beans. But I am seeing on tomatoville that people are starting beans indoors. I have tomatoes and peppers started indoors right now. They are going in container garden
beans are going in soil.

Questions
1. Should I start seeds indoors? I have had decent success starting seeds of tomato and pepper last year
2. How long before the transplants are ready to be planted out? I assume that I will be planting those out around June 1st, so want to know when to start seeds
3. Do bean plants like cold treatment? Can they survive cold treatment?

Thanks