I was doing weighted chins 25 x 10
flat bench instead of pushups (195 x10 )
squats (started at 175 and once fitness kicked in finished at around 215 x10 ) - the squats ARE THE KILLER
deads (315 x 10) - PAINFUL!!
I think once you intro carbs back into your body your lightheadedness will go away and your numbers will start to creep up.
I would bracket my carbs (Protein+carbs) right before and right after the workouts - the rest of the day I ate protein+fat meals a la Berardi.