Buying a GMT 16710?

[Cuts33]

So I am looking to become a first time Rolex owner and have been lurking around the sales forums quite a bit as while I can afford a brand new one, I cannot afford the divorce that would quickly follow.

That being said, there is something that just draws me to the GMT Pepsi.

Which leads to my question, is there any reason not to buy a regular black bezeled GMT Master and then just purchase the pepsi bezel separately and have it switched out?

It seems like the regular black bezel version goes for much less than the pepsi model so I could save a lot of $$ by doing it that way.

Any input or advice in this regard is greatly appreciated.