I am not quite sure if essm has dual thrust engine. But have a look at it
. Motor Burning time around 10 second. And it doesn't seems to have any sustain motor.
Anyway, I didn't knew, HISAR RF is also a dual pulse like hisar o+. I mean, I tried to find that information but as far as i read there was no confirmation about it. Do you have any source mentioning HISAR RF has dual pulse ? If you have can you please share it. And If it is the case then of course HISAR RF will be the ideal choice.
however, can it be quad packed like essm? i didnt find any official confirmation about it either