Bathroom Exhaust Fant

[Karoline Kaon]

Hello DIY-er's,

The exhaust fan in my townhouse is out of order. So I purchased a Panasonic Whisper Ceiling Fan and a roof vent to install and replace the old exhaust. After removing the old fan, I realized the old Nutone fan was venting the air into the attic... Our inspector didn't find any signs of mold. So is it common to have exhaust fans to vent to the attic in the northwest coast Florida? The weather up here is not as hot as south Florida and the weather here does can get in the low 40s. I am concerned about make a hole in our roof to vent the fan on my own because I don't want any leaks. Should I just exhaust into the attic? Or should I contract someone to install the new ceiling fan and cut a hole in my roof to vent the air? 

Any thoughts from the experienced DIYers?? The attic is unfinished and there is loose-fill insulation. My concern is trying to make the hole bigger and to fit the panasonic exhaust fan, when there is fiberglass insulation hanging out above me. Although I think it would be so fun to do it on my own! But I also want a functional and nice bathroom. I will post a photo below.