could say $2K/day on top of hotels is easy no decision, unless they want to give you actual details for you to consider
theres a la carte with some virtuoso partners, though im skeptical how partners of virtuoso et al are 'chosen' (or not)
could look at oberoi, taj, aman multi-destination packages. perhaps some here can recommend driver/guide co
some of the agents here i think would handle entire thing themselves, some say theyve used partners in india