if its your only car then that sort of limits what you can attempt. if its your first time with a big suspension overhaul, that normally over runs days if not weeks (or months for my BMW!)
Hayes are good but the amount of knowledge forums have is mental!
Really? What were you replacing? The only thing which took a while for me was taking off the rear subframe and replacing the bushes.
Can do all 4 shocks in 2-3 hours, front wishbones in 2-3 hours including polybushes, rear lower arms are an hour each at most - and those figures include jacking and removing wheels each time - if you jacked it and did the lot in one go then a day should suffice easily really.
I know what you mean, they can be a PITA too, as soon as you fix one thing, something else breaks on the test drive lol.
The cooling system is fragile and well worth doing - actually one thing I like about the M52 is how easy it is to get to the alternator, tensioners, water pump, fan, cooling hoses, radiator, thermostat, coil packs, spark plugs, throttle, maf and airbox. It could be a lot worse but thankfully not.