Visitor Visa question for my wife who is a Pakistan national (Hindu)

Hello, I am an Indian Citizen (Hindu), my wife is a Pakistani citizen (Hindu as well) and we got married in the USA and currently living in the USA. I am planning to bring her to India to visit my family and I am confused as to which type of visa should I apply for her. From my research online, I found out that I can apply for a visitor visa-single entry-valid upto 3months. However, when filling out the application, it does allow me to enter a 24-month validity with a multiple-entry request. My questions are: 1. Is this the best way (visitor visa) to go in order for me to get a multiple-entry for her, so she can visit my family more frequently instead of applying for a visitor visa every 3 months or every 24 months (if she gets approval of 24 months). 2. Our hometown is Hyderabad and we are planning to notify 5 places of stay (Delhi, Hyderabad, 3 other places within Telangana state). We only have 3 designated port-of-entries for arrival & departure (Chennai, Mumbai, Delhi). If I select Delhi for arrival, let's assume we arrive in Delhi, clear immigration. Will she be allowed to fly from Delhi airport to Hyderabad right away on the next/connecting flight? OR She would be required to go to a Police station and register her arrival in Delhi? 3. How can I get an EPR (exemption from Police Reporting) approved for her? Is there any application to apply or file a request/petition? She is a Hindu and we have an 18month old baby with us and it will be hard to go report in a Police Station everywhere. Especially, after we arrive in Delhi, it will be hard for us to travel from Delhi to Hyderabad with all the luggage without having the option to fly. 4. My son is born in USA and has a US Passport. I read on the Indian Consulate website that because his mother is a Pakistani Citizen, he cannot apply for an OCI card. Is there any workaround for this? Long story short, I am trying to get the best possible visa for my wife (a Pakistani Hindu) and an easy way to FLY to Hyderabad and reach our home town instead of having to go by long train journeys with all the luggage from North India to my small hometown somewhere in Telangana. Many Thanks in advance for reading my post and for all your input/suggestions.