I think you will be even more likely to cheat on alternative plan. In ketosis you are not supposed to feel hungry (or if you do it's only very temporary hunger and not the type of craving that hunts you forever until you give in...) and on alternative plan you are not in ketosis. The alternative plan seemed very appealing to me, but after I tried it (for one day) I realized that it's actually worse, in terms of giving you cravings for foods that you can't have - either can't have as much of as you want, or not until the next day, etc. That was my experience with it anyway.
I think that, if you are truly determined to lose those 8 pounds, it would be better if you did only the non-restricted packets and veggies for 3 weeks, and maybe do some exercise, like walking every day, and then they should really be come off and you can go on to phase 2, 3, and 4. Just force yourself to not cheat for 3 weeks. Or else, if you can't-not cheat, then just go right over to phase 2 and just end the phase 1 that's not working any more for you. Being in phase 4 whe3n you get there, means that every now and then you will have to do phase 1 anyway, so maybe you can make it for a week or two now and then without cheating. And who knows, by doing that, maybe you can bring yourself down to the exact weight you want to be.
I don't know if these suggestions are bad or good - use your judgement!