I was half trolling but basically it's extremely beneficial to corner yourself during FRKZ. If you're midscreen he pretty much has 4 way+command grab (and of course, airdash cancellable normals+8 way dash can increase the number of variations in the mixup drasticall). If you're in the corner, he can't cross you up - he only has high, low, throw. Of course it'll still be hard to block, but it's MUCH easier to deal with than being midscreen.
Gold bursting during FRKZ is viable too, Bang has to use barrier to block, which is an extra frame of blockstun, it's a good chance to get a hit in. Gold burst IIRC is +5 (correct me if I'm wrong), so even if they instant barrier you should still be +1.