Glad to hear you aren't planning anything any time soon -- but don't be surprised if you need more time than 6-12 mos. You have a lot going on over there and you can't put a time marker on "By this date I will feel x" because feelings just are. They do not follow a time table.
In my way of definitions?
Monoamory = ability or desire to love only one at a time.
polyamory = ability to love more than one at time
swinging = where singles or committed partners engage in casual, recreational sex with other people. It is one type of open model.
I don't know if this would help you:
They are all articles on the index pages
I listed in a previous post, but I know it is a lot to look at.
Maybe starting with those would be helpful in sorting yourself out? Before you try to articulate to wife?