+1
Or you have to stay higher and can bomb your targets with less accuracy.
With the DLC Combined Arms, you also can direct control these SAM units. You can set the engagement range to only 75% or 50% of its max. range, which makes it more difficult for the defending aircraft to escape (less time to react, counter-act, use lead-pursuit tactics as described by you). Or you set your own Radar to off, while monitoring the airspace with an early warning radar, which is placed some 50 miles behind your SAM units.
You can also use triggers, with which SAM units set their radar to on and engage, only if your opponent in a well placed trigger zone.