3, maybe 4.
Since radiation seems to be of importance, best to go with 4 otherwise one or more caps might be transmitting at their max
And if speed is not an issue, maybe go with the cheaper cAP or cAPLite, there is maybe no need for AC-speeds ?
Besides, nowhere I know there is Cap AC (XL) to be found ... the normal caps can still be found if you want.
BUT ... caveat ... this last part is not a future proof suggestion.