Hey Chase, haven't been active on the forums lately or been approaching due to personal issues, but this post made me excited. It's great to know that you're considering coming to India. I've always wanted that, to see how far a really experienced seducer like you can push the limits in a country like ours.
Now, note that I do not have real life experience in the cities I'm going to recommend. However, since I basically live on the internet almost, I've read a lot of stuff on game in India, other people's experiences here, and the general mentality of Indian girls.
What you want to do, basically, is target girls that take a somewhat modern approach to life. Career women, women in upscale lounges and restaurants, upscale areas etc. are your best bets. Look for women who were either raised in a big city like Mumbai, Bangalore or Pune, or have been living there far from family for more than a few months.
Any malls, good restaurants, parks, and international food chains should work in your favor. Screen specifically for women who speak English well and is in touch with the world either through Hollywood, Western music, study or work stints in America or Europe etc. It is best to target middle class or higher women because the lower demographics would be too skeptical, and may have a conservative and repressive worldview about sex, white man, talking to strangers etc.
About Goa, I think if you want to push your limits it is a bad place. The place is basically a party town where both foreigners and Indians come for booze, party, drugs and sex. So even a conservative Indian girl will be willing for a quick fuck and that will not speak much about your game. If you want to test how well game works, stick to somewhat challenging territories.
As per my personal experience, I've tried gaming for 2 years in a city called Guwahati. A city with a million inhabitants. I got 9 numbers and 3 dates. No sex. I'm a really skinny guy with average Joe fundamentals and conversational skills. Also I've had a problem of ejecting early due to pressure. Couple with that the fact that you don't find many women alone in the city and you can say that if I had really tight fundamentals, good game, and was in a bigger city, I could have done far far better. Yet, even then, getting 3 dates only proves the fact that cold approach definitely and undoubtedly works in India. Also I really think that if I ran things smoothly, I could have gotten sex in the 2nd date, if not the first. As far as opening goes, most girls are open to be approached. So no problems there.
If you have time, I very very strongly recommend that you watch the videos of a YouTube channel called "Baap of Bakchod". The guy basically interviews women with questions like What Do You Like in Bed, Do You Use Tinder etc. in cities like Pune and Mumbai. If you watch those videos it becomes clear that even Indian women are quite sexually open. You'll understand the mindsets and the limits somewhat by watching those videos.
Well that's all I have to say. I hope you stay in India for a few months, find massive success, and then share your findings with us. Cheers!