I have csgo for my most played game at 4,654k hours and 9 accounts.
I have fallout 3 on PC and xbox and ive played fallout 3 on PC for 10 hours and xbox for more than 100+
I would play fallout 4 75-150 hours considering how much is on that and i can get the season pass from my buddy if i got the game, i plan on buying at Christmas but if you are giving it away at the end of the month why not go for it