All really good things to think about. Lots to consider and just want to be strategic in what is purchased next.
I had considered the 17-40 f/4 but was unsure if it would be smarter to have the tiny extra reach and extra stop of the 16-35L (have been lusting after the 5D kit with the 17-40 but hard to justify with the recent 70D purchase). I think for me the big thing is spending the money where I get the most value and the least possibility for gear devaluing/not recouping loss if I grow beyond it. Just wanting to future proof as much as possible, especially at this stage on a more narrow budget. Don't want to put a lot into cropped frame lenses and then not be able to have them transition to a FF should I upgrade sooner than 2 years.
It does sound like renting is a smart move and I'll be contacting one the local shops here to try a few things before I jump in head first.
Anyone else see anything that I'm missing? Given the majority of paid work I'm getting does require a UWA lens it sounds like that might be the smartest option to pick first...
Spend your money on lenses. They last Much longer than bodies.
1DXII, 5DIV, 5DSR, 8-15/4L, 11-24/4L, 16-35/2.8L III, 24-70/28L II, 70-200/2.8L IS II, 100-400/4.5-5.6L IS II, 200-400/4L IS 1.4x, 17/3.5L TS-E, 24/4L TS-E, 35/1.4L II, 100/2.8L IS Macro, 300/2.8L IS II, 600/4L IS II, Zeiss: 15/2.8, 35/1.4, 55/1.4 Otus, 85/1.4 Otus, Profoto B1