G’day Ron, happy for you to borrow my GoPro Hero9 to have a play with before you spend your hard earned money.
These days it’s a toss up whether you go for a “Go Pro” style action cam or a 360 degree camera (eg: Insta360 V2) as the latest of either have good stabilisation and horizon levelling, and have 4K or better recording as well as 1080P.
Also, not sure what video editor you use but I have recently changed to VideoProc Vlogger.
It is a fully functional Free program that is easy to use and also comes with a great audio editor built in. A couple of quick tweaks of the equaliser will make all that wind noise disappear without affecting the rest of the audio track.