What are the arguments for and against an adult tackling a complex LEGO Technic kit as their first (and possibly only) build? Suppose I want to get an overall view of LEGO as an adult and can afford to buy an expensive kit.
I have the following abilities


Good eyesight with glasses

Good hand-eye coordination and manipulative ability

Good DIY and tool skills

A good basic understanding of mechanics, gearing, levers and so on

A good spatial sense

An ability to follow straightforward instructions and diagrams such as making flat-pack furniture or setting up home devices. Also the
ability to make simple modifications like adding a hard-drive to a
desktop computer and reassembling it successfully afterwards.

Advanced knowledge of computer programming and good general knowledge of electricity and electronics

Experience of building model aircraft -  both flying and non-flying models



I wish to buy a kit that contains most of the functions (motors, gears, controllers, programming, drive trains, etc.) that will be found in Technic kits of all kinds.
As an example I might buy 42100 LIEBHERR R 9800  as described here https://www.newelementary.com/2019/12/lego-technic-review-42100-liebherr-r.html
Questions
Will buying the above kit be likely too much to start with, simply because I have not worked my way up through simpler models? Are there other arguments for and against?
Is there a smaller kit that has as roughly as many build techniques and features  as the above kit but contained within a smaller space?
The set is marketed as &quot;12+&quot;. So even without the skills you mentioned you already have, I doubt you would have issues during assembly.
Piece of advice - don't rush it, take your time during the assembly process. It will take more time to assemble than you think. Especially as this is the first set and you need some time to learn the parts and how they work.
For a challenging Technic set, my personal suggestion, is to look for set from much older &quot;studful&quot; Technic era. Something like 8880. It has fewer parts, but many more parts assembled per step and most of them are black. Don't follow this advice for your first ever Technic set though.