Please help me with an advice and with a... How to ... :)) also with a to do or not to do...??? :) and mostly with: doing it effects... :)

(hope you understand me :) ) I will try to explain:

My stupid beginner mistake ... :)) was this: I made 14 account types... With 14 gender types (which are the same account types with genders...) Couple hetero, Couple Him bi, Couple Her Bi, Male hetero, Male bi, female hetero,Female bi, etc... 14 account type with 14 gender which are the same with the account type...

Now my questions:

What is happening if I delete some account type? I wan to cummulate all the couple types 

Couples Hetero

Couples Him Bi

Couples Her Bi

Couples both bi

all this go to a single account type>>> Couples

Man Hetero

Man Bi 

this go to >>> man

Etc. with the others account types

Also I wan to cummulate in the same way and the gender type... 

as I told you... account type are identical with gender types...

Bassicaly I know how to do this:

I delete the account types and the genders which I don't need and let the users at first login to choose theyr new account type and genders ... but what is happening if I do this?

I don't wan to mess up the site...

Also I have some users which have different rolles Does This changes affect the user roles?