I think you will need more sust., 500mgs is pretty much what everyone recomends and that should work well. If you going to front load sust I would inject EOD 1000mg week one and two. But I don't know yoour stats and cycle history.
Frontloading is a great idea for long lasting esters. It works for me. I can really feel it kick around the beginning of week 3. the benefit of front loading is your blood concentration get higher, quicker.