I think stalls are inevitable. Some things could help it along, but our bodies have survival instincts that try to regulate our fat - it goes back to those times when the winter was mightly lean and food was not always plentifull.

You don't have tons to loose, so it will probably go slow - could be very slow. Just stick to the basic diet. If the splenda causes you to have cravings - then I'd think about cutting it out. Try not to worry about things that haven't happened yet. Easier said than done, I know (I am a major worry wart too!)