I have a 2 year old Triple Hybrid female named Butter, and a 2 year old Triple Hybrid male named Bread. They are twins, but not identical twins lol.

I have a strong feeling that Butter (female) is going to be ready to breed soon, if not currently, because of her size. She (Butter) is nearly 4 feet long, a few months younger than 2 years old, and very thick (almost as round as the opening of a gallon milk jug at her thickest area, maybe a centemeter thinner). She looks incredibly healthy, and eats a small to medium sized rat every week. She just shed today, and looks gorgeous.

The male is significantly smaller. Bread (male, also 2 years old) is between 2 1/2 feet to 3 feet long, and about as thick as the opening to a Coke Bottle. He has shed either his sperm plugs or the skin of his hemepenes about 2 weeks ago. He has eaten (a medium to large mouse) twice since then, same days as his sister Butter has. He is in the beginning stages of shed as of today.

They live together peacefully and co-habitate a 40 gallon tank, they utilize all of the 40 gallons, especially Butter (female) who is as long as the tank is long plus a few inches. I feed them seperately on the same day, and there has NEVER EVER been an issue with them living together. They've been living together since they were hatchlings (at hatch time to when they were living 6 months with their breeder, and from then to now with me) with no fighting or anything.. so please do not tell me that it's irresponsible of me to keep them together. They are just fine. If they weren't, they'd be seperated by now.
Anyways, I have a feeling that they can possibly breed soon. Maybe with eachother, even though I'd personally feel weird breeding siblings together.
I am brand new at breeding, and I would like a general how-to for breeding colubrids. Since they are hybrids, I can't give proper specifics for you to go by. I appologize, because I do understand that may make breeding and incubating eggs more difficult.

I would like to know how I can know if my snakes are ready to breed, how to get them to breed, and how to take care of her eggs when she lays them. (as in, what general temps/humidity level, incubation time, ect)
I gave as specific info about the twins as possible to help, besides what types of snake they are, I may contact the original breeder for even more specific help as well, but please feel free to chime in here.