Would stay away from sanke. More trouble that it's worth for homebrew.
Get (2) 5 gal ball lock cornie kegs.
Then you just need gas, hose, faucets and fittings.
Welcome to the rabbit hole. ;)
Don't know if this was mentioned, but you have to know what your water has in it before adding more . So if you use tap water, get a water report done.
I use RO and start from scratch for every style. Just easier IMHO
Not to be contrary, but you have to be WAY off for temp to matter much. Most hydrometer are calibrated at 68F. If you measure at 100F you are only off by 4 pts. +/- 10 degrees and you are only off by 1pts
That's why you dilute it. Your yeast will reduce sugar by a certain amount (attenuation). if you start way too high, it's gonna finish way too high and be sweet