no pomi, yo are doing the right thing. i went for the same reason as you. i needed help with the kids. unfortunately i was only able to be ther for three weeks because of ds1's school.
yes, the flight was hard. as was the initial delay which i think with pia you have to accept. i took the pushchair right up to the plane, although as it was the first time without the double pushchair, ds2 was running round like wild.
at one point, just before they all fell asleep, i felt like crying. i had reserved the front bit, where they can put a cot down for the baby.
i ended up putting the boys on the three seats, dd's cot, provided by pia on the armrests on top of them, and myself, i made a little place to sit on the floor in front of them.
they didnt give me my pushchair bag till baggage reclaim, and at passport control i was literally crying. baby was too little to hold her head up, she couldnt sit then, so carrying her wasnt easy. ds2, the two year was tired and wanted me to carry him. ds1 was also tired. in hindsight, i should have just found a clear bit of floor, and sat down, waiting for the rush of people to clear from passport control, as handling the kids, the passports, the nappies, and the unfriendly couple near me, i was in tears myself.
But once out of there. i literally, walked past the immigration people, told them i was taking the kids out, handed them over to my sister and brother in law who were outside. and it was just bliss. they sat in the car with the airconditioner on, gave them chocolates sweets etc. made them happy. i went and got the luggage. came out, and it was wonderful for three weeks. no cooking, no housework. lots of extra pairs of hands, eyes. etc.
if you keep in mind the light at the end of the tunnel, then it is much much easier.