A few thoughts
Rack- I'm not up on Baja's offerings nor do I run a RTT so I'm not much help there
Protection- I'm a big fan of Tactical Rovers stuff. I'd start with their sliders as the most important since break-over is limited on these trucks. They are currently the only sliders that go all the way in to the frame rails, so they act as a bit of skid plate as well and protect the compressor. Tactical also offers gas tank and transfer case skids which I run on my LR3. They may be the only company in the US offering armor for this platform. I'd have to check to be sure a '16 can use their gear but I think it will still fit.
Wheels/Tires- compos are the nicest option to be sure, or you can run the LR3 18s w/spacers. I used to run Duratracs in 275/65-18 and really liked them in the snow/ice but not so much in mud and rocks. I do use mine pretty hard, but after 2 years I was literally tearing pieces of the tread off with my hands. They were a pretty good tire on the street as well. You will need to do a little trimming to fit that size w/o rubbing. Most guys go with a 265/65-18 and some get by with no trimming. It seems each truck is slightly different (go figure...Land Rover) and I don't know anybody running on a '16 specifically anyway. Other tire options I'd look at in that same class would be the Cooper ST-Maxx and the new (is it still 'new'?) BFG KO2 For a more street friendly tire that doesn't look all that mean but works quite well I'd look at the Cooper AT3. We have LR3s or 4s running each of these tires currently in the club. Myself I'm running 275/70-18 Cooper STT Pros, but I would only recommend them for dedicated trail rigs, not daily drivers. Too many compromises for everyday use IMO.
Lift - I don't think Sasquatch is still around. Johnson is the default choice. Proud Rhino (via Lucky8) offers a multi-position rod that can be set stock, lifted, or in-between but I think it's a plastic rod like the OEM parts. There are also some electronic adjust on the fly options from LLAMS (Australia) and a company out of Italy whose name I can't remember right now. You can also do an all electronic lift with the GAP iiD tool, but the amount of lift available is limited and seems to vary from truck to truck (because Land Rover).
Winch bumper- I don't know if anybody will be 100% compatible with the cameras and sensors. ARB is the most common but to tell the truth I don't like mine and wouldn't buy it again. My main complaint is that it sticks out so far, actually decreasing approach angle, and that the winch is so inaccessible, fully enclosed. You have to reach through a small opening to get to the clutch and it's hard to see when spooling your line. Tactical makes a bumper I nearly bought when I set up my truck but I hadn't seen in person then and wasn't too sure about it. Having seen it since, I'd buy it if I were doing it over. I believe Lucky8 also now has a bumper option.
Rear bumper/tire carrier - tough; I think the only real option is Kaymar out of Australia. A few people in the club have them. I'm not in love with them myself but it's a bolt-on option. Tactical offers theirs for the LR3 and has said they would install it on an LR4 but last I heard had not actually done one so they wanted the first person to actually bring their truck to them so they could be sure it would fit. (they are in SoCal). Both bumpers have issues with the parking sensors when you use a swing away tire carrier - the tire has to be placed very high or it triggers the sensors. It's possible to make them work together but finicky. I have a custom welded bumper styled more or less like the Tactical and of course ditched the sensors.