The default "Anaconda" install is like 7Gb after it grabs everything. Turnkey if you're using all that stuff anyway, but otherwise not particularly worth it. Miniconda on the other hand I'm finding meets my needs exactly. The base install is standard.
not likely IMO. i've found conda - which is their environment management tool - to be a hassle unless one needs specific numpy/scipy/GPU libs. i'm using pipsi and pew, although i'll look into pyenv.
Former conda dev lead here. Definitely interested in more details regarding what part of the conda experience you found to be a hassle, if you’re willing to share.
[0]: https://github.com/pyenv/pyenv