Shiurim in food and disrance

Prayers and Blessings
1

Hi what does Rabbi Yitzchok Abadi Shlit"a hold for the shiurim.
Kezayis?Kebeitza?Reviiis?Maleii lugma? Parsah? Mil?
Also how long in terms of time does one need to drive to get to a minyan?
Thanks

2

Generally speaking, for biblical measurements (i.e. Matzah first night, 4 cups, Lulav first night etc) he goes like the Chazon Ish and for rabbinical measurements like Rav Chaim Naeh. At the end of Helek beis of Ohr Yitzchak, he has a kuntres on hilchos Pesach and there he lists the various measurements for each mitzvah.

3

Hi 4 cups is derabonon
Only exception would be if pesach would fall out on Shabbos as the first cup is kiddish and would constitute a deroyasa because of kiddish Friday night

4

Correct