Converting crankset from 28-38-48 to 30-39-53 My current front setup is a 28-38-48 crank with Deore XT shifter &amp; derailer. In addition to a FD-443 and top/bottom-pull converter, what else will need to be purchased for proper shifting?

Also, yes, I do notice chainline issues on the 28 and 38, since it doesn't like 2-3 (on 8-speed), by which I mean chain-on-derailer action.

Note: the reason for the FD-443 is because "Shimano does make one model of front derailer designed to work with "road" (52-42) chainrings and RapidFire upright-handlebar shifters, the FD-R440 model." (http://sheldonbrown.com/front-derailers.html). The triple in the FD-440 series is the FD-443. As it's bottom-pull instead of top-pull, a top/bottom pulley converter is also needed.
You will need to purchase only 4 items to accomplish this swap:


Crankset - Standard road triple 
Flat bar road shifter set ST-443
FD-443 front derailleur
Possibly new cables, if they don't come with the shifters.
A new chain designed for the number of gears in your cassette. 


You will also need to ensure that you've enough adjustment range on the frame to move your front derailleur up by up to 2cm, and that the derailleur you purchase is dual pull, so that you don't need a pull converter. 

But it seems to me you've already worked that out.