is there a risk using this front end vs. IB Bracket orders, seem similar?
the risk of writing your own API or using someone else's front end depends on how it is written and what safety checks it contains. The IB bracket order is a simple order type so you're not really comparing apples to oranges. My suggestion is try take a look, if you find it straight forward then you're all set. If not, find another front end that offers the functionality.