At this point it might be easiest just to hang sliding curtain panels from the ceiling.

I need to see the whole space . HD has some great affordable closet organizers BTW Waht age is your daughter that drives what needs soring in ther e. The doors were probably okay as they were you coudl just wall ppaer them to hide the mirror I might even see if Pax from Ikea could be used to get the space filled and really good storage ideas . I just did a whole wall in the new house in Pax it is great and 3x8 ft fits really well I used 3 pax cabinets on a 9' wall

"Waht age is your daughter"

At first read I thought they are each three years old and eight feet tall. "they are 3 each 8 feet tall".

Hinch the need for large doors. ^_^

You can always ask at your lumber yards. They will know of any handyman etc that can put in closet doors.

There's often a guy at 4th and Grand looking to barter work for food, at least that's what his hand painted sign says. That's as affordable as you'll find.