I did not remove my egr, and the tbi I did, but did not have to. You can use a box end wrench or maybe a swivel or what not and get to them. In some cases not sure on tbi, but probably you don't even need an extension or swivel, the socket and ratchet will fit right on without them. I left me water neck on too, just removed the hose from it, you can do either.
As for the tbi screen it goes in where the fuel line goes in I think, should be an easy fix and be able to do it with the tbi mounted. I think the tbi base gasket aint cheap either, IMo you'd be better off if you remove it to put on a spacer, it comes with gaskets and hardware. I wished I would have. Not to mention my bolt broke for the tbi, I had to cut it off flush, then drill it, tap it, helicoil it and put it back on. it was not fun.
You just need to mark the dist. cap to rotor, rotor to dist. body and body to intake or firewall to put it back in right, or get the engine to tdc and pull it. You do that as mentioned before, pull no. 1 plug wire, pull the plug out, put your thumb over the hole, have someone to bump the key(after you unhook the coil so it doesn't start)then when it blows your finger off stop and check it. Look at the timing mark, see if it's lined up, and make sure the piston is all the way up with a screwdriver in the plug hole. Then look at the no. 1 wire, and when you pop the cap see if the rotor button(metal part) is pointing towards that tower.
Now on mine I had support braces for the accessories. I had to remove the one on the a/c comp. The one from the tensioner to the water neck/t-stat housing, and one on the alt.
remove the pcv vac line to the tbi, unhook it on the tbi side and move it out of the way, unhook the egr vac. line from one or the other or both, one end goes to the egr solenoid, or mine did. Remove the vac. line from the back of the tbi to the map sensor. unhook the tps iac, and any other ones you see, like the injectors. it has a rubber plug in front of the tbi once you unhook it from the top of each injector it slides out of the tbi body. There's another small vac. line to the egr solenoid I think, mine had 2 off the ps port of the tbi in front one to the smog pump I think and the other to the egr solenoid, pretty sure. Also got one for the charcoal can on the front. All those are pretty clear and you know they need removed when you get started.
You could unbolt the bracket with the egr solenoid, esc module, and map sensor, leave them hooked up and move it out of the way, or unhook them and unbolt it. Not sure if you can get on the intake bolts with it in place. As for the t-stat remove the hose and unbolt the ground wires, unhook the collant temp sensor, and you can leave it in the intake. Mine had a ground on the ds front or 2nd back intake bolt/stud, remove it then remove the stud. it like the t-stat housing had a nut to remove and remove the wire ring, then another nut to remove the stud. I had to unhook the metal tube that suuplies air to the brake booster, just used a wrench on it. it also bolts to the back of the head to hold it in place if you need more room to move it out of the way unbolt it. I just unhooked the heater hose via it's clamp, loosened the dist hold down and pulled it after I unhooked the 2 plugs from the bottom and all the plug wires, you can leave them on the cap and move it out of the way makes it a bit easier to reassemble not having to track and make sure each wire is right. This is esp. good for your first few times working on them. Mine had small hex bolt heads and phillips slots cut in them. The coil can stay mounted, but it's only two bolts and 3 wires to remove it, 2 plugins and one coil wire to the dist. Then you want 2 wrenches, one to fit the fuel line and one to fit the nut fitting that it threads into, hold that in place and crack the lines loose. Have a rag ready for the gas. I heard it works good to remove the fuel pump fuse and let it run the gas out, I would guess it would have to be running for this. Some tbi's hold pressure, some like mine doesn't. if it has pressure then gas it going to squirt, wear eye protection or look away at least. Then the intake bolts come out.
I think that's everything, at least what I can remember without looking at it.
I'm sitting through to the end of this movie. I'm interested, too 
