1. Performance for ELEC EMER CONFIG is calculated with VREF+10 or 140 kts, whichever is higher, so your approach speed wouldn't be 110 kts. Even if you do go-around from touchdown, RAT only stalls at about 125 kts, so still some margin left.
2. Since in this case you will most likely declare emergency, ATC would normally avoid situations which could result in a go-around from low altitude.
3. I imagine a very high speed could unstall the RAT, but I believe all the Airbus procedures are in place to prevent you from stalling the RAT in-flight in the first place.