Clean Run also carries the whole line of Clip And Go stuff - so you can either buy bases and jump cup strips and supply your own PVC or just buy some of their “Jump Start” jumps (be aware that the Jump Start jumps have only one jump cup - if you’re only working one dog, at one height, that’d be fine, but if you might want to work at different heights, it might be worth it to invest in a set of jump cup strips for ease of height changes. https://www.cleanrun.com/index.cfm?displaycount=1000&fuseaction=category.display&category_id=762
I have a bunch of Max 200 practice jumps - they’ve held up really well, despite my absolute lack of care for them (they stay outside all year, unless we have a hurricane forecast). http://www.max200.com/cp5200/scripts/prodView.asp?idproduct=36
They also have a DIY jump kit - just supply your own PVC: http://www.max200.com/cp5200/scripts/prodView.asp?idproduct=612
Affordable Agility sells a decently priced little travel jump set with 4 jumps: http://www.affordableagility.com/traveljumpset.htm
One vendor or another used to sell tunnels with free shipping, but I can’t remember who that was (and it was years ago, so that might be long gone…)
I’m not familiar with Agility Gear, so they may have better prices - I’ve only mentioned companies that I’ve personally purchased from. J&J - it’s been a while, but I don’t remember them having a great selection or particularly good prices, and (I know you’re not looking at one), but I really don’t like their dog walks.
As far as jump width - 5’ is AKC standard, but you’ll see plenty of practice jumps at 4’. Dropping down to 3 is getting a little skinny - it may come into play if you have a bigger dog and want to work on slices, etc. Little dog? Not so big a deal.
Tunnel height - I’d go 24" (AKC) and bigger is better for the dogs. For practice, you can save a little money and weight by getting one with a 6" pitch, rather than 4" (that’s the space between the ribs on the tunnel). 15’ is a good length for home - not so unwieldy as a 20 footer, but gives you a little more flexibility than a 10.
Weave poles - up to you, but go with the 24" spacing. I don’t like the PVC based ones, because it’s something that the dog has to step over. I’d spend the money and get a regular metal based set - they’re heavy and safe. I’d get the stick in the ground poles and a spacing strip http://www.max200.com/cp5200/scripts/prodView.asp?idproduct=344 before I’d consider PVC bases.
Also, check out local trials - if the club rents equipment from a vendor (some do, and for AKC, it’ll be listed on the trial premiums - or you can check vendor websites to see if they have a trial calendar), you can often get a slightly better deal by contacting the vendor about buying the equipment that they’ve brought to the trial (so it’ll be slightly used) or asking if you can meet them at the trial to pick up your order, rather than pay for shipping.