A warning first. I built a custom suspension because nothing else was out there that did what I wanted how I wanted.... so what works for me may not work for you - and most specifically the design took into account the type of wheeling I do....
I think it's all ruffstuff sourced - I bought a kit then bought additional parts if something didn't work right. The rear was pretty easy, but the front is a 3 link with panhard and that took some work and rework. Front coil overs and rear shocks are all King that I bought from Filthy Motorsports. Whoever builds your shocks/coil overs needs to be your best friend. Here's why - their first attempt at spring rate was WAY off, but they totally made it right (and then some). Not just that but Filthy maintains a suspension bible
http://www.filthymotorsports.com/ then go to "helpful calculators" that is very well done. Ben is also a pretty nice guy and quite knowledgeable without being arrogant.
So to the nuts and bolts. 12" travel front coil overs. 2.5 shocks, 150/250 lb springs. Rear is 10" travel with Ford Van springs that I cut down and will, eventually have to replace with custom something or another because they're too short. Their rate is 325#. My vehicle weights 5000 lbs with me, Buick (my english mastiff) and a cheeseburger in it which puts the dry weight at somewhere around 4500 lbs.
If it is you're concerned about rates - get the coil overs with adjusters rather then being forced to take them apart each time to change the rate. Mine isn't there yet, but it's good enough that 'fixing' it or narrowing its fluctuations isn't a priority.
And do measure the coilovers. I ordered 14" front but got 12".... didn't notice until it was way too late. Something else for anyone to consider, it's not a bad use of funds to keep an eye on Filthy's garage sale site - you can get coil overs for 25%-50% of retail then build the rig to match the shocks.