Front suspension rebuild?

Time to replace bushings and ball-joints on the E46 and I am seeking some insight and advice.

I recently put H&R Sport springs (1.2" drop on standard suspension), should I buy lower wishbones for sport suspension?

My instinct is to replace all parts with original parts but since I am unlikely to own the car for its next 115.000 miles I am considering the possibility of using some pattern parts, so:

Who are reliable sources of pattern parts?

Which brands of pattern parts are the best quality and/or value?

I am planning to replace lower wishbone with balljoints, wishbone bushing, anti roll bar droplinks and bushings. Anything else I should replace while I'm at it?

I am also considering replacing the dampers; who is the best supplier of Bilstein in Ireland (any other manufacturers worth considering?)?

Input appreciated!

Thanks damen, Coilovers were never really part of the plan!

I appreciate your point about the lower springs on standard dampers. The H&R Sport springs are designed to be used with the standard dampers and the drop is quite modest, but I am considering changing for something like Bilstein (dampers only rather than coilovers).