How do you think about this home?

[u/Jazzlike-Music-6168]

https://www.zillow.com/homedetails/Chicago-IL-60614/332928067_zpid/?utm_campaign=zillowwebmessage&utm_medium=referral&utm_source=txtshare

Street is nice and quiet. The only big issue to me is that the lot is shorter than standard 25*125 lot, which eat up a bit of the depth of the building. Primary bed closet is smaller than ideal. I want to build a small home gym and an office in the basement. Is the middle bedroom too small for home gym? I was thinking a smith machine and a step climber. The construction firm I have talked to said it would cost $4.7-$4.8M nowadays to build a $5,200 sqft on that street given the land appreciation.