Bintel... you probably want a dob, 6-8" depending on budget, 6" is light and easy to move, 8" starting to get big.... F6 would suit if your just after a look around at "things" go the 8" if you can , Hurstville wont be too flash for darkness
if you have a small car try before you buy ( there are collapsable ones as well) there are other things to mention but do a search here, read, then post back here.
Roger