You can always make an offer then put it on paper that it is subject to due diligence. Then take another 2 weeks to do proper research on the house including what others have mentioned (get a house inspection done by 3rd party)
Making an offer gives you the feel for the market you in. I always go 10% lower at first but hot properties might go for 30% more than asking price. So the longer you looking for a house in an area the greater the feel you will have in what to offer
Yeah, where I am now I just really worried about fibre. The week it took to get the fibre transferred I really needed good internet, but found out on the ground floor I only have Edge or 1 bar LTE. Luckily on the top floor where I made my office I had 7mbps down, although less than 1mbps up.
Anyway, fibre is here and my problems are over.
Edit: At least the cell towers in the area have battery backup, unlike the previous place where you couldn't even make calls during load shedding.