It will be fine. As I said before not breaking the paper on the board is the most important thing. If you do just put another one in an inch away. Self drill screws are for heavier gauge metal such as met/ sec. Normal fine thread drywall screws suffice.
Don't overthink it. The key thing with plasterboarding is Don't break the paper on the board it's the strength. Remember to stagger the joints opposite sides of the m/f.
I know you should not laugh at peoples demise but I did chuckle at the covid denier who died of covid a day after testing positive. Always refused to wear a mask, believed what he read online.The true meaning of irony.
Just checked it was a rapid 7.2 v. £90. But I would advise you to go with the milwaukee. Its about £110 bare tool plus another £40 for a cheap charger and batteries.
Can't remember off hand its a while ago I got it. If I bought one now I would get that milwaukee one. It looks the biz. I think I paid £80 or £90. I would pay the extra next time as replacement batteries are cheap, so are chargers.