Hi tsunami, welcome. I am not really sure about the exercise to be honest- I suppose it will be trial and error to see what works for you, and depends on how vigorous your workout is? Your meals sound good, and again the 200 cals extra to play with would be a case of trial and error. I personally would struggle with only 200 cals at lunch- I tend to split the day 50/50 and have something small but high calorie for lunch (avocado, cheese etc), for dinner I use the bulk of my calories on meat, and have quite a lot of veg. For me, a 4pm snack is a bad idea because I seem to not be able to stop. That being said I have just had a piece of cheese! Other factors affect how you plan the diet too- for example, are you T2 diabetic, is this just for weightloss, and do you have much to lose? The book does promote a 3 small meals philosophy, but I found I was overeating by a bit at every meal (times 3) so cut down to two meals. I never thought I could do without breakfast but now after doing this 18 months I rarely even think about it.
I've had a really good, back to basics day 1 today. Avocado and ham for lunch, just had an apple and a piece of cheese, and tonight we're having chicken in mustard and cream sauce with broccoli. I'm absolutely freezing and keep needing a wee, so that's a sure sign I'm on the right track! Just by drinking water consciously it makes me realise how little I've been drinking these last few weeks. I didn't dare weigh myself this morning, but I might do tomorrow just to see where I'm starting from, and set myself a mini target for the next few weeks.,