Yeah it's relatively easy, you just have to go through the CBHC Uninstaller before installing it though since leaving CBHC on while installing the EnvironmentLoader will cause major problems. If you end up not liking it, you can always switch back to CBHC. Unfortunately the only way to get the YouTube app to work again would be to use Aroma. Also, I wouldn't worry about Pretendo right now since Nintendo stated that most online services will continue to work for the forseeable future, not to mention Pretendo is nowhere near ready to be used actively, hence the beta-development stage it's in.
Anyways, what I would suggest doing is installing Tiramisu first to familiarize yourself with the process, then after that you can add Aroma to the EnvironmentLoader and choose which one to load on boot.
(For clarification, Aroma can NOT run .ELF Homebrew Apps, as the only ones that will load with it are .RPX and .WUHB packages. But Tiramisu can run both .ELF and .RPX, but not .WUHB. By installing both Tiramisu and Aroma you can load whichever one you need for your uses at the time of booting.)
Tiramisu guide is
here