@Halliwell Jones Chester
reading all this. - The guys first of all come up with the regulatory part.
I own a DJI Magic Air 2. plus a proper controller - not using the mobile phone as a controller device.
Sharing my experience.
Indeed - regulations are some shi*e you have to work out for country and local - where you intend to use it.
Perhaps you need a proper liability insurance too and licenses. Discussed here already.
To the more technical part.
In the beginning the proper controller and software wasn't available so I had to use the mobile phone as part of controller.
It gets pretty hot, receiving a mobile call when flying, power drain and so on. Also the display is small and depending if you wear sunnies with polarized glass you wont see a lot.
Now with a proper separate controller and just a link to mobile phone - local network via hotspot this is lots easier - still depending on sunlight it is difficult to see the display . Bought a neckholder as add on. Need a proper starter plate - some cardboard that shoud be even - important to control GPS and exact return to home parameters.
Once you ve got all this . next is proper training to handle the drone . take off, landing auto homing, obstructions handling, Turning, - what about birds. .. My drone was attacked once by crows, glad I monitored in time Turned the drone . and did a counter attack . So I indeed accelerated . and the birds got scared before. Also High Power Voltage Lines may not be detected by the collision avoidance system. So there is a lot what you have to do in the area of flying. Get someone with you that has experience in flying drones.
Also - when you want to make recordings on IG while in Motion check the location and what you want to see. Speed matching - drone in front flying backwards so camera takes the bonnet and driver or following or drone flying parallel.. / sideways. - There is a lot to consider - (not just the regulatory part that takes a huge amount of effort)
Seriously . if you do not want to do this as a regular hobby - instead I would engage a professional - with a proper 2kg drone - and all the capabilities.
I have the Mavic Air 2 to check corn / other crops for damage by boar and other, measuring any damage in size if any, occasional check for rescue of roe fawn before hay and so w/o walking in the area and leaving my scent everywhere. Saves a lot of time. Also after storm when wind has sufficient calmed down I check agricultural and forestal gravel and green lanes if any trees had came down and call the forestal service to get these removed. I am not an experienced drone pilot - I am very careful and most of the time I fly between 10m and 50m altitude - when controlling a forestal road between trees - it is somewhat 5 feet above ground to avoid low hanging branches and other obstructions.
A friend of mine does overlanding with a H2 Hummer so what he does - if unknown terrain is ahead - he sends the drone out to verify the planned route on any obstructions.
My opinion think twice before you purchase something like this. - Does the effort match the result? You need to fly frequently!
Seriously - I was thinking multiple times before I invested in this. However - in my case it avoided a lot of discussion with farmers claiming for compensation on damage by boars. And a lot more, calling a professional would be much more expensive as I need it on a regular basis. But in your case .. ad videos - that is professional investment, perhaps tax relevant.. and as long as you do not do it on a regular basis .. I would not invest both time and financial effort.