Yes I believe I've been conservative with my estimations and...

Yes I believe I've been conservative with my estimations and will be bitterly disappointed if the actual result doesn't fall within my range of $US5.5 to 6mil net profit.
But I probably have plenty of excuses to use if I am wrong,namely:
1) Higher fuel & transport costs than I've conservatively estimated
2) Higher legal costs than I've conservatively estimated
3) Higher settlement cost with Chemaf than I've conservatively estimated
4) Higher labour costs due to increasing numbers
5) Higher write-off of past exploration costs - maybe with the first decent profit they'll take the chance to write-off Dikulushi regional explor costs due to poor results or even the Philippines explor costs
All other costs seem to be locked-in.
I'll still hang my hat on the above figure.