I've been researching this for a couple of months, I'm doing the same project over the rest of the year, and I'm looking at BCRacing coilovers with Manon racing brakes.
BCR make a coilover tube with adjustable shock and ride height, and camber tops if wanted. They sell two style of bottom cup for welding onto your own strut, a KE70 one at 48mm and a AE86 one at 51mm. I'm happy to go with the KE70 one, there is no gain in the AE86 one and I'd have to get AE86 hubs. I'm buying the V1-VA set, more road use and lighter springs than their semi-race BR-BA version, and I'm negotiating lighter springs than their 6-4kg/mm as AE86 and KE70 are less than 2kg/mm stock.
Another option would be find a complete strut off a Corona XT130, something we've done in the past, you get 52mm strut tubes and big, but non-vented, brakes. You'll still need to buy an adjustable shock and weld-on coil-over thread kit, but just the threaded tube with spring base and top. I was going to do this but the 'Rona struts are hard to find and its all very heavy.
Other companies that have weld-on kits include- Titan suspension, PSR suspension, Godspeed Max, Emotion Racing Taiwan, and Group D in Ireland. Any company that didn't list spring rates I figured was crap, and anything from overseas means Customs Duty/Excise tax & postage on top. BCR seemed the best overall.
Manon Racing have been easy to talk with for brakes, they offer a 13" wheel kit using Wilwood Dynalite calipers and vented disc, or 14" kits using WIlwood Dynapro calipers and disc.
This setup gives you an adjustable shock and bigger brakes while using your stock hub and steering arms. You can buy the whole AE86 setup from FLOS in Ireland if you're keen, coilovers, strut tubes, hubs, brakes, rotors and steering arms.
I'm budgeting on $1500 each, so $3k for coil-overs and brakes. You can easily spend $4k on coilovers alone.