220 kts is a good speed in the A320 as unless you are high and heavy, you can apply half speed brake and the VLS will be around 210kts. Then you can select Flap 1 as you are below 230 kts, VLS will then drop and you can wind the speed back to 190kts and select Flap 2 if needed.
This enables you to go down and slow down at the same time whilst configuring for the approach.
The A319 speed brakes can be fully extended with the A/P engaged but the boards only move to the equivalent of half the deflection of the A320s.
Be careful of selecting full speed brake in the A320 with the A/P engaged as you may get caught out if the A/P disconnects.