A320 baby
Remember that 15kt crosswind will provide you with a bit of lift from the swept wing on the upwind side. Effectively this gives you a little bit of an increase in your headwind. Ok, it's on one side only, but you are keeping the wings level along with the FBW normal law so it acts to increase your lift.
For this reason you'll might need to select a very slightly lower than normal attitude for the flare, then de-crab as normal and you should plonk yourself on the runway without any need to use in-to-wind aileron other than to avoid drifting downwind.
I float in strong crosswinds sometimes and it's normally because I forgot to remind myself during the last few hundred feet of the associated lift effect.
In gusty conditions, I agree with the use of Flap 3 as you will carry more energy. However, the high nose attitude and wallowy handling can make life tricky unless you are very smooth and steady with your sidestick inputs.
AD