pricing up my income for university

so after my previous post about me funding my university ive decide to see how much cloud mining investment would be. for this ive looked at genesis-mining.com

ive chosen to look at genesis mining due to them being the most transparent company out there. also ive seen proof of payouts etc.

now onto the calculations:

ive decided to budget for £100 a week income. this will be enough to make up the shortfall in my income.
ive now used minergates calculator to see how much hashpower i need to bring in this £100. ive used minergates calculator due to their fees being the same / almost the same as genesis's.

it turns out i need roughly 15THs for £100 a week income at today's btc price.

now time to price it up on genesis.

wow. now that expensive.

ive rounded up to 7.2 btc due to transaction fees within the network.
the return on investment is around 5 months which is very good. and being a life time contract could be very sustainable.
another benefit to genesis is that i can re allocate my mining power to another coin if btc drops.

any other suggestions? im more then happy to take into account other peoples opinions.

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