The Sony A7RII and the A7II. In the days of film, I was a Minolta and Olympus shooter.
Native Lenses
Sony/Zeiss 35mm, f/2.8 Small, light, and sharp.
Zeiss 50mm, f/2.0 (Loxia) Manual focus and manual aperture. I reviewed this lens in March 2015
Sony/Zeiss 55mm, f/1.8 Reasonably fast, it's super-sharp (corner-to-corner, wide open) and the autofocus gets the job done.
Sony G 70-200mm, f/4.0 Small and light, but f/4.0. Very sharp across the range and weather-sealed.
Adapted Lenses 
Voigtlander 15mm, f/4.5 III I use it with the Metabones M to E adaptor. I talked about the lens on the blog in April 2015. For when distortion is a benefit.
Sigma Mount Converter MC-11. This is not a simple, reverse-engineered adaptor. The MC-11 makes selected Canon-Mount Sigma lenses work like native E-Mounts. This is because Sigma designed those lenses to accept the same firmware commands from the MC-11 that they would have put into those lenses as native E-Mounts. So, when there's a new lens, there's an MC-11 firmware update. (While great for still photography, Sigma admits that the MC-11 isn't strong for video work.) 
These five Canon-Mount Sigmas, below, provide the core of lenses for my portrait work. All of these use the the MC-11:
Sigma 24mm, f/1.4 Art Wide, fast, big and heavy. It's the f/1.4 that makes this a winner. It's the fastest, autofocus 24mm.
Sigma 24-105mm, f/4.0 Art An all-around zoom with broad focal length range.
Sigma 35mm, f/1.4 Art This is about as fast as you can get in a 35mm. It's very sharp wide open, providing great, subject isolation. 
Sigma 85mm, f/1.4 Art A fast, very sharp, really big and heavy, Sigma "Art." This lens is at the very top of the 85mm pile. On the Sony A7RII this is a portrait monster.
Sigma 135mm, f/1.8 Art Another fast, incredibly sharp, big and heavy, Sigma "Art." Combined with A7 series autofocus accuracy and 5-axis stabilisation this is another portrait giant.
 Memory (SDXC cards)
Lexar SDXC Cards High-quality memory cards are a no-brainer. I've never used any other cards and I've never lost a shot. Sadly, Lexar is packing it in. When I need more cards, I'll probably go with SanDisk or Sony.
Wasabi Batteries Affordable from Blue Nook in the US. For speedlights and LEDs I use rechargeable, eneloop pro AAs.
The Lowepro PhotoStream RL 150 This is a "roller" large enough for the portrait kit. It can go to the shoot or stay in he boot, and it will fit in an airline overhead — just don't let them weigh it loaded.
The Domke F-2 Big enough (just) for a body and the 15, 24, 55, 85, 135, and 70-200mm lenses. At just over 7.5 kilos (16.5 pounds) loaded, it's "comfortable" to carry, but I try not to carry it far: House to car, car to location. 
For walking around, the smaller Domke F-5XB (in black). The strap (with woven-in rubber) stays on my shoulder.
Camera Straps
Peak Design Straps particularly the "Cuff," and the "Slide."  I wrote about these in November 2015.
Rotolight Neos (LEDs), and an RL48B (LED). They're light, bright, portable, and can be surprisingly soft; and
Cactus RF60 speedlights, with a V6 IIs trigger. The V6 IIs provides High Speed Sync on Sony, following a firmware update on the RF60s. These work with a softbox, a shoot-through umbrella, or Rogue Flashbenders; and
A Cactus 60x60 softbox, that works with the speedlights, or in low light with the Rotolight Neos, Big and small 5-in-1 reflectors, and a 4x6' (2 -stop) Lastolite diffuser.
Exposure Meter
 The Sekonic L-308S Simple and inexpensive.
Benro's A-0691 Aluminium with the B00 Ball Head Fine, but discontinued.
Software and Apps
Lightroom, Photoshop, Silver Efex Pro 2 (and the rest of the Nik Suite, now from DXO, late of Google).
Triple Scoop Music is my source for music.
Monitor Calibration
x-rite i1 Display Pro Works on my non-Apple monitor.
The MAC Pro (OS10 Sierra).
Epson's Stylus Pro 3880 I'll run it 'til it dies.
Printer Profiles My source for custom ICC colour profiles.
Sony's Australian PRO Support program.
I've settled on three Canson, 310gsm, cut-sheet papers: 
  • Canson Platine Fibre RagGreat blacks and a neutral white. A cotton, optical-brightener-free, acid-free, resin-coated paper that's also robust (as fine-art papers go).
  • Canson Rag Photographique: This my matte paper replacement for Epson's Hot Press Natural that's became irregularly available here in Australia. This Canson is cotton based, acid-free, very smooth (for a matte paper), optical-brightener free, and not as warm as the Epson.
  • Canson Baryta Photographique: An alpha-cellulose, acid-free, pure-white paper with a barium sulphate (Baryta) coating. It's extremely smooth and has a very wide colour gamut.