I think you shoul invest it in different reliable investment sites but you must look first in
HYIP monitor and
HYIP forums if who is active and paying. Its better to invest in different
HYIP sites because if you lost some you could gain in some sites. There is a possiblity that if you only invested such money in only one sites and it turns out to be a scam then your money would be of no used. But if you invests it in different sites you have some tendency that you win some and you lost some of it.