I might have tomatoes in mid June

This is the most exciting Mother's day present ever. My husband bought this big darling at a local greenhouse. They start the plants way early and grow them in a fairly large pot. I transplanted this baby into a 5 1/4 gallon pot that I purchased at Joann. They have the best stuff at that store. Here in central NY we don't usually get homegrown tomatoes much before the middle of August. My challenge will be to get them outdoors while the weather is warm and back inside before it drops down below 55. I read that production will be severely reduced if you let the plants get too cold. I also read that comfrey tea is the perfect fertilizer for tomatoes so I am going to give it an occasional dose. We have a few comfrey plants growing around here so I'll just chop some stalks up and stew them. Aaaaahhh. Tomatoes. Tomatoes. Tomatoes.