I'm going to go ahead and guess that any international travel plans – whether round trip or not – made by a convicted felon awaiting sentencing is going to raise flags and will be blocked by the government.
The only possible redeeming feature of the round trip plan is that, when the government inevitably finds out about it, at least you have a slightly easier time explaining that you’d planned on coming back. I mean it is the thinnest probably-electroplated silver lining in the sense that they probably won’t believe you but at least there’s some minuscule evidence in your favor.