Tire size doesn't make any difference for CV angle. It's all the amount of suspension lift. My CV axles were slightly negative before lifting it. The Tacoma IFS uses the same parts as the 4Runner/FJC but the frames are different and the geometry is slightly different. For example Camburg makes different upper control arms for the Tacoma than the FJC, they are not really interchangeable.
That photo is my truck, just
put FOX 2.5 IFP coil-overs and Camburg UCAs on it last week. The springs settled a little, probably closer to 2.25 to 2.5 inches over stock. That's about all I'm going to get I think out of them. I can tell you with 100% certainty there is no diff drop on my truck.
Depending on what I can find i stock tomorrow I'll be putting on 235/85R16 pr 255/85R16 so this should be plenty of lift, so I'm not worried. I may put a 0.25" spacer on the driver's side since it wants to sit a little lower than the right side. I'm not trying to stuff the super wide tires on like you. If I can get 4 of them the 255/85R16 BFG MT is about 33.3" overall but being just under 10" wide on stock 7" rims it won't require any fender trimming or a body mount trim to fit like the 11" and wider 33"+ tires do.
Toytec knows their stuff about Tacomas and their opinion was it causes more problems than helps.
I never ran a diff drop on Imelda and CV axles didn't suffer. Totally different IFS and she has hub locks, that makes all the difference in the world IMHO. But the angle on the axle was fairly significant, especially when it still had ball joint spacers and shaved lower bump stops.