I have joined back in summer with 4K (earned in 6 months of mining LTC / VTC with 4 computer rigs, they've cost me 10K, now I am full of R9290x video cards and can't even sell them at half price) and earned (by totally reinvesting profit) around 8.2 K until last week. Also have put my 1st withdrawal for the initial 4K last Friday since that was my ROI day.
Rule #1 when 'investing' into risky schemes is to not 'reinvest', but withdraw a.s.a.p and as frequently as possible until you are in the green. Only after you recovered your funds you can reinvest or keep playing with the house money.
With 4K you should have withdrawn 150+ USD/wk. With the above tactic your 'loose' would have been almost nil