From my understand on your first cycle you don't need a whole hell of a lot. 750mg is a lot for your first cycle. I would think 500mg Sus and 400mg Deca is just fine. Also there is no need to taper down keep it at a constant level. Test should not be tapered! Let's see what the MODS and the VETS say about this issue but my guess is that this is way to much for your first cycle.