That sort of money will go nicely towards a standard rebuild assuming nothing else required along the way, and there always is. Be clever with the costs, don't try to keep up with Billy and his Civic. Many will tell you straight away that the block mentioned is not suitable for anything too much over 450hp, especially with boost. So be realistic and aim for that. If it absolutely needs a turbo then source an earlier or different block, or add so little boost that it really wasn't worth the effort or cost. Because those figures are very doable on a 400 rebuild before you even add a turbo, then it goes through the roof, power and costs and probably pieces of piston. Not trying to kill your enthusiasm.
