The Challanges of FFX (freaks only :D)

[Kuja]

have a couple of questions:
1: can i have the celestial weapons, just for my aeons, that they can hit more than 9999.
2: what's the basic weapon for tidus, is it the longsword or the brotherhood?, cause when you get the brotherhood, you equip it automaticly.
3: is the second challenge not tougher than the last one?
4: how the **** can i beat yunalesca, or jecht now

and ehm, i think i need some help, cause i've never done a challenge like this...