I don't think "pursuing from multiple avenues" applies to the Bronx site. How many angles could there be? The land available there is very well defined. There are three major hurdles - parking garage debt, GAL relocation, and the rerouting of 153rd St. It's too straightforward to need to get creative.
The Long Island City site makes slightly more sense. There are options. Buying air rights over the tracks. Buying land on the east, west, and/or north sides of the Fresh Direct site. Bringing in development partners for the whole neighborhood. Etc.
That said, though I think these two sites are the front-runners, I'll still bet on the field. The foundation of the LIC rumor isn't very firm. The internal top choice could be anywhere.