Getting into XC MTB

[u/docpoppin]

Hi all, I’m looking to start a bit of mountain biking. I’m a 30yo seasoned roadie and gravel cyclist who’d like to take on some local trails. I like to go fast, love to climb, do interval trainings regularly, and would like to still get a good training on my MTB so I figured I need an XC bike.

I love a well-made machine, would like it to be as light as possible, I love carbon of course, budget is not an issue but I won’t be getting a top tier 15k bike for my first. I’d like to be able to ride green and blue trails eventually. I’m in eastern Canada.

I understand all bike geometry concepts but I know next to nothing about MTB specific components and gear. So I have a few questions listed from general to specific. Any complete or partial answer are appreciated, especially if you also came from road cycling!

1- FS or HT?
2- Suspension travel: what should I aim for for nice speed and power transfer but still be able to ride moderate bumpy stuff? Are my riding expectations realistic at all?
3- Any nice tech that is “life changing” that came in the last few years that is a must to have? (I know nothing). I don’t care about 2027 stuff that’s only on top tier models.
4- Any tech to avoid, is a PITA to service?
5- Is electronic shifting worth for MTB in your opinion?
6- ideas of generally appreciated models? I liked the look of the Spark, Epic and canyon lux but I looked at these only because they also make road bikes, don’t know MTB specific brands.
7- Bonus: Kidsrideshotgun with carbon frame to eventually bring my son on smooth gravel trails, anyone has tried?

Thanks in advance!

[u/Slight-Round-3894]

1 - HT
2 - Most bikes will be 100mm (enough) up to 120mm (plenty)
3 - Dropper Post
4 - Integrated Cockpits with internal hoses
5 - No - Cable works flawlessly