I agree with the above comments.
The PBG supplied pickups are certainly adequate for getting started and maybe a lot longer!
You can always change the hardware later if you wish.

I have just found this that may be an alternative - plus it gives you coil split and minimal/no soldering. ( it might mean swapping 2 pots that i think look full sized but still easy to do.)

I personally would stick with your first choice of vibrato - far more honest than the one that SAYS Bigsby.
BTW, that is the same one I have on mine and it works great.

Cheers
Ricky