I just want to say the fiat things you care doing are pretty risky.
I don't want it to sounds pessimistic but fiat and crypto don't body to well....
But i say the new of Stablecoin coming to the steem engine and maybe user will be able to deposit fiat and get stablecoin and buy spinvest: that might be much safer...
But the best of luck as it works for all of us :P