Bravado aside, It is a tricky situation for Pakistan, one that needs to be handled with a lot of care. let's not forget that the only front-line fighter that PAF is the F-16. These airplanes still need up-gradation and spares. Yes spares can be sourced from other countries but then if this is your only front-line fighter there is peace-of-mind when you know you can get them whenever you need them.
the lollywood dialogues don't help. U.S did it's part in offering the planes, if Pak doesn't have the money, politely decline the offer. All this drama may and talk about getting it from some where else is counter productive.
Depending on the package these 8 may still be a good deal. I don't think Pakistan has the money to induct a new platform and the logistics involved. Even if Pakistan has the money, there is no option at the moment other than the Chinese.