This is a very interesting post in many ways. I can only echo Mel's sentiments in that you must not enter into an arrangement that is not right for you, or that you feel uncomfortable with.
My gut instinct, for what it is worth, is to recommend that you give serious thought to a DMP and then review your situation periodically. Having re-read your posts at home tonight at leisure, as it were, I suspect that that is the path you are thinking of following anyway.
As for the question of are you actually struggling, that is for you to decide. If a financial statement has been produced that clearly exaggerates your expenditure then that is patently not correct, however I have very often asked the question, for example, "How much do you spend on food each week?" to be given an answer of "£30"
For a family of four, I kid you not!!
It MAY be possible to spend £30 per week at Tesco's to feed a family of four, but I wouldn't like to try it, so you must allow for the fact that, as well as the weekly shop, there will be the milkman, at least 2 or 3 visits to the Co-Op for bread, bits and bobs etc. None of these "hidden" expenses can be covered again by flashing the plastic, so I would encourage you not to be too hasty in dismissing a financial statement as being overly generous.
Lastly, if by chance you have available credit on your cards and haven't used them at all (or an overdraft facility) in, say, the last 3 months, then you are most likely ok as you are. If your cards (or overdraft) have been used in that time, especially for non luxury items such as food, petrol etc, then you may have to consider whether you are currently in a denial situation. Might sound a tad harsh that, but it is very true.
Regards.