I recently finished the diet a few weeks back. You can see the results on the post just before yours titled "we did it" that my fiancÃ©e posted.
I have a few pointers.
If you want the best results then follow the diet word for word. It's a very complicated process the body. Changing the plan by "cheating" at the start and also doing you own workouts may not workout. The cheating bit at the start has probably already happened so let's put that in the past.
I don't know any of the details of your "strongman" workout but you really need to stick to the workouts provided. Looking at you original photo, this will be a lot less calories than you are used to and as such "meaningful" training really can't happen on this diet. The workouts seem to be specifically designed to control stress to the muscular nervous system and allow recovery between them based on the given diet. If you deviate from this then failure is far more likely because you may not be able to recover and will basically be ruined early on. This will have a negative effect on your mental side.
Half the battle with this diet is mental. It's really not that hard if you are committed enough, but give yourself half a chance and stick to the workouts provided.
Again, it says to take weight and measurements each weeks yet you say you are not going to do this. Do it! You will see the gains and it spurs you on mentally. Be prepared to see greater weight loss in the first week or two and considerably less in the later two weeks. I lost 8llbs first week, but only 3 I. Week 3. But the weight does keep coming off all the time.
I did the advanced program and to be honest it was really border line for me. I made a few adjustments where needed, such as instead of a handstand press up which I cannot do, I do shoulder press working the same muscle group. But only 2 changes overall. Much more than this would indicate dropping a level. As the workout says, the emphasis is on form and consistent speed of repitin. It's really important to head this. Once your form drops, stop, take the rest period and continue. If you go those extra two reps your level of fatigue increases very quick and hence you will need more time to recover. Being as for me the was barely enough time to recover anyway, it's super important because at no point in the diet do you get a boost of calories so once in deficit recovery wise, it may have a constant knock on effect.
So overall summary, pick one of the program's, change it if it's to hard! Do be too ambitious with the workouts. It's a weight loss program, and not an Olympic training regime.