Quite the bi-costal pickle.
If they are lower T2, you won't have the national degree to take you to either coast if you go to the opposite coast for law school.
I definitely 2nd Melinda in stating that you cannot assume you will make it as a transfer student. Million variables between now and the end of your 1L.
The scholarship money might be nice but if you are more than 70% sure you will end up in Cali anyway, you might as well suck it up and stay. Most scholarships have a cut off in terms of ranking for them to be renewed (at my school it's top 40%). You have to consider that you may simply suck at law school (it's decent probability, 3/4s of the class isn't going to make the top 25%) and you can lose your scholarship. Then you may be stuck in the middle of the class in T2 school in a state 3000 miles away from home in a state that is bogged down with uber-prestigious law schools and prestige whore hiring partners.
NY is also cold and snowy. Conversely, California may break off into the Pacific and sink.
I’d say stay in Cali. Hit the Cali school up for money, using your other scholarship as leverage. Also, if you do well in Cali during your 1L, you can likely get a scholarship from them for your 2L/3L.
Food for thought.