Since you got the reply from the various people says this is worst way to put your fund on it mate. Still you seems interested on the cloud mining which are legitimate on the market. As a advice I do not too suggest you go with the cloud mining for any algorithms.
Instead of making the investment on cloud mining contract for one year you can arrange little more money and make your own GPU rig.
GPU will show the investment infront of you. Then no one can scam you too.