It will cost you 0.00016915BTC to rent it for 24 hour and using https://alloscomp.com/bitcoin/calculator with 3.5 Ghash/s you can earn only
per Day 0.00000340 BTC $0.00
per Week 0.00002383 BTC $0.02
per Month 0.00010362 BTC $0.08
Now you can figure out whether renting rigs and mining bitcoin from miningrig rentals is profitable or not, however you can try mining altcoins which are in their early stage if you like to play with and take risk.
if the calculate is like this, then the OP can not get profit from mining, besides that for now, if you want to rent some rigs, i think maybe you want to thinking again about profit or not but i think you will not get much of profit.