Got my Hindustan game up to 1679, and I'm fully Westernized (tech and military). I actuallly had the tech fully Westernized by about 1642. Once I had the sliders in position and a good admin ruler, it was just a matter of waiting for the 5 stability regain (about 10 years each time) and then another level of Westernization. I waited until I was fully Western before pushing the Centralization slider all the way over and taking a "Great Leap Forward" strategy of going from Indian to Western troops in one go. Lot less instability to worry about, and I used the 30-year gap to modernize my infrastructure. With a neighbor bonus of +100 on every tech, and Western-level costs....I was getting new tech levels every few months early on. With all those rich production provinces, I cranked out production buildings left and right. Now my national income is up to about 4700/yr, well above the next closest nation.
Now that Westernization is complete, I've taken the ideas of Church Attendance Duty, Divine Supremacy and Unam Sanctum. Goal: Conquer and Hinduize all of Asia before the Europeans can exploit it. With that sudden leap forward, I'm now the 2nd most powerful army in the world, only behind Austria and its terrifying vast HRE army. I'm going to continue to move my sliders back down towards narrowminded to improve my missionary rates. Next National idea will probably be Grand Army, to improve my forcelimits. Because MOAR TROOPS. Given that I still have 150 years before end of game, I don't know if WC is possible, but I think taking all of Asia is certainly realistic. I'll actually want to start with SE Asia, because the production income (my bread and butter) is better there, then up into southern China (all that tasty Chinaware) and then finally the breadbasket of northern Ming and the Manchu.
Then once all that is cored and squared away, I'll turn west and see how far I can drive through the Middle East before the game ends.