Am I crazy for considering a Gloria All Gravel or Fairlight Secan 3.0 as my first proper gravel bike?

First off - I know this is a financially privileged position and I'm not taking that lightly. Just wanted to acknowledge that upfront.

Background on me: Recently moved back to the UK after 10 years abroad and I'm genuinely excited to get into gravel riding and bikepacking properly. Based near Bath/Chippenham in the South West. Stats if relevant: 183cm, 84cm inseam, 89kg. Fitness is a work in progress, strength training 3x a week but cardio is honestly lacking right now.

For context, I had a V1 Cannondale Topstone previously but sold it when city life and a heavy work schedule meant it barely got used. My circumstances have changed so I reckon I've got more time and also live in the countryside!

What I'm after:

• Day rides and overnighters to start, mostly solo but open to group riding
• Firmly in the exploration and adventure camp rather than chasing speeds
• Based in the South West so Cotswolds, Mendips, Marlborough Downs type territory
• Ideally a complete build bought soon to make the most of spring/summer
• A "one and done" purchase - durable, adaptable, future-proof (yes I know about N+1, let's park that for now)

The bikes I'm eyeing: Gloria All Gravel and Fairlight Secan 3.0. Both seem like seriously capable, well-regarded machines but I'd genuinely love real-world input rather than just spec sheet reading. I've seen a few posts recently here from Gloria owners, sounds like people love em!

Questions I'd love help with:

1. Is this overkill for a first proper gravel bike? Part of me thinks if you're going to invest, invest properly and grow into it. The other part wonders whether I should start more modest and upgrade once I actually know what I want.
2. What makes or doesn't make either of these right for my use case? Adaptability and durability matter more to me than outright performance. Are there meaningful differences between the two for adventure/bikepacking use?
3. Steel vs other materials for UK conditions specifically - both appear to be steel frames. Is that an advantage given British weather and terrain, or is it more nuanced than that?
4. Comparable alternatives worth considering? I've done reasonable research but I'm aware there are probably bikes I haven't come across yet.
5. What am I not thinking about? Bag systems, fit, anything you wish someone had told you before your first proper gravel setup.

Happy to receive the "you're overcomplicating this" responses too. Appreciate any thoughts. Thanks gang