I'm in a similar situation as you iseekool, I have been trying to lose weight. I have been cutting down on large meals and reducing my intake to 6 smaller meals a day.
For the first 2 weeks I lost 3 kilos and then leveled out, I was lifting at the same time though and noticed more muscle.
HIIT seems to be a good idea and those 10 x 100m sprints from R31Nismoid look good. Hope it all goes well man cause as I to am in the process I know how much of a pain in the arse it can be with such a drastic change in lifestyle but it will be worth it in the long run.