Upvote:17
The number of countries within Schengen that you're visiting is not really relevant.
Your application will be assessed by the processing country's consulate (Hungary) based on whether you have a legitimate reason to visit, sufficient funding to cover your expenses, a reason to return home etc. They will not be involving the other countries on your itinerary, since the Schengen system basically trusts Hungary to do the due diligence on behalf of Spain and Italy as well.