So you can decide if you want to pursue this, here are the bonusses to your hideout.
Would i do it again? No. By the time i got to this lvl, i was already rich and bored. It simply took too long to get any meaningful benefits from it.
I pretty much logged in twice a day just to keep stuff crafting in rotation, and put an air filter in just because why not.
Let me know any questions or discussions. but i would not pursue this again, maybe next wipe i'll pursue a max strength lvl to become a spiderman and climb up to impossible to reach places.
Source: https://www.reddit.com/r/EscapefromTarkov/comments/n94f6a/elite_lvl_hideout_my_first_maxed_skill/