[rindava]

is already final, then he would just have to do a step parent adoption which isn't as detailed or costly (it doesn't require a homestudy in most states)

If you are fostering he may depending on the agency have to go through the classes and everything before he ever spends the night or moves in. Actually, here locally if your placements haven't been with you long and you are getting married they move the kids and close your house for about the first year of your marriage....If it has been a while since the kids moved into your home and/or they are foster to adopt they usually work more with you. It will delay the adoption here locally. each state and agency can be really different though.