Very interested in this, it reminds me of the classic RPGMaker game DiDNapper. Any idea how often you plan to update it?
I don't know, it's hard to say.
I read the C# Unity tutorial in June, half of July and August I did this mechanic specifically and it's without prefabs. i've already started doing second core gameplay mechanic (struggle in captivity after lose), i expect to finish that in less than a month.
Another month for assets and a couple of locations, i think
attack and ability animations, i think a week.