I agree with just about every post here. We also wouldn't spend the money on DLP as it's just not in the same league as WDW. We have 2 boys so have been "trapped" into only being able to go in school holidays when of course the cost goes sky rocketing. You're in the fortunate position of having a younger child so look at going off peak. I would advise not to go during the months of June to August as the heat and humidity are shocking and it could ruin a once in a life time trip. For the last couple of years Disney have offered UK visitors hotel discounts and free food which can save a lot of money. It needs to be booked the year before you go i.e our Oct 2012 trip was booked in June 2011 but that means you can pay for it over a long time and on a monthly basis.
Like the others both my DH and I work very longs hours and DH works 7 days a week. We don't drink or smoke and due to all the work hours rarely go out. We are also in the fortunate position in that we have paid off our mortgage (I guess that means we're old
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Don't give up hope on getting to Disney World it really is worth all the effort and sacrifices and it's all about making magical memories