Not possible, 1.5 amps divided into two strings will yield 750mA per string if perfectly balanced. Figure plus or minus a few percent, you won't get an exactly even split. If you LEDs are only rated for 700mA this is not a very good solution as one string will likely end up over driven if not both. Otherwise you only need 1.5 ohm resistors on the output leg per the diagrams, the various other resistors are kind of irrelevant unless your aiming for a dead on matched current which doesn't really matter for most applications.
