Boost
before you stabilise. Also, popping a heat sink may buy you a few seconds. (Another option is popping a heat sink right before the jump countdown, so your ship comes out of hyperspace already cool.)
If the Interceptors get close enough to start shooting before you can charge your FSD, pop another heat sink, turn 180° and boost right past them. They (especially Basilisks, which can fly at 530 m/s) cannot turn on a dime.
When your FSD is fully charged, turn toward the jump target and boost again.
ECM? That works only for Scythe’s missiles/limpets. Thargon missiles are not affected by it, AFAIK.
I think I’d really need to see your build on EDSY to give any further advice