The first point to make is that only days outside the UK in the last 5 years, looking back from the date of Naturalisation application, are relevant. So for example, if you were to apply early August 2010, we can ignore the first set of entries on your list, and thus ignore 51 days out of the UK.
So 859 - 51 = 808 days, if you were to apply in early August 2010.
Why am I talking about early August 2010? Because by then, and assuming no more days out of the UK until then, the day count in the last year will be less than 90 days out of the UK. I think wait until then, and thus passing the 90 day test as regards the last year, can only help.
Let's look at the UKBA guidance to its staff .....
click here. In particular we need to look at 4.1.2, and note that 4.1.2.a is met, that is, in the 2 years prior to the 5 year period had a low level of absences.
But the other parts? Well we can note that 808 < 900, which is good, but vguru_21, do you think you have a good chance of succeeding?