[Currumbin sky (Dave)]

Hi Iam a new budding middle aged astronomer, bought a Saxon Dobsonian 8 inch with Plossol 25mm and 10mm eyepieces.

As time is limited have only opened roller door on garage (townhouse) and observed the sky by having base near the open door, which allows the peripheral street lights to be not too much of an issue.
Just wondering if this setup would seriously affect the viewing performance?
I have seen lots of stars obviously only a limited portion of sky ,but the Dob can sit there set up permanently in the garage.
Would it solve cooling issues and atmospherics around the tube?
Or would it make things worse?
Iam obviously going to venture out at some stage, but just wondering about this setup.
Thanks .