The vast majority of Kurds are Muslims. While I think they'd probably be grateful for an independent state and leave Israel alone, I don't think you could "guarantee" they'd be an ally to Israel, especially if Kurdistan had voting representation at the UN.
To [loosely] quote Lord Palmerston: "[Nations / Countries / Governments] have no eternal friends or allies, they have no perpetual enemies, they only have permanent interests."
(The last bit is quite arguable, of course, due to generalization and [sometimes rapid] changes of nations' governments, demographics and cultures.)
The vast majority of Egyptians and Jordanians are Muslim. That doesn't preclude them from being reasonably reliable peaceful neighbours and trading partners, after finding themselves on the losing end of a few wars.
So, while there is never a "guarantee," it's very likely that Kurds, sharing with Jews a somewhat similar historical experience regarding their homelands — the diaspora and the alyiah — would feel some sort of kinship and be a more reliable ally and partner to Israel. They know that they have much less to fear from Israel than from their Muslim Sunni and Shi'a "brethren" neighbours.
This editorial piece presents some interesting facts and an opinion: Kurdistan: Great, greater the greatest? - Pravda.ru, by Lyuba Lulko, 2014 June 06