My view is thus:
Either buy a small/mid sized hybrid that will probably top out in the 270 region on the standard manifold, or if you want more, buy a K04-064 and fit that.
Theres no point IMO fitting a TTE280 or K300 etc on the standard manifold, as you end up with the laggier drive of a bigger turbo without the power to show for it. Theres also no point fitting a aftermarket manifold to a daily driver as they just dont last and you cant be doing with that hassle. Choosing a smaller turbo means you get better spool and less lag while still making the power the stock manifold will manage.