I am also 34 and have much the same plan as you, just I had to revise the figures a few times as I had kids :) The increase in required house size + university = loads more cash required to be financially independent. If you know for sure those things won&#x27;t happen then maybe you can go for 100K. Still, old age could become expensive, we won&#x27;t be young and healthy forever. You basically need more than 100K so that you have an upward trend continuously to old age. You can&#x27;t <i>just</i> cover your costs on the interest (and 6% is dangerously optimistic). Good luck to you though.