Hello.
If it serves you as something I work with the SAP2000 and it could verify with you the structural model that you use. I also have the Staad Pro but I don't have license of the him for that belongs to a friend, although I can use it.
Regarding you project will tell you that it depends a lot that country is, for the costs of the materials, type of foundation soil, seismic area, qualified manpower, etc.