I ran 770mm bars and 50mm stem (originally tried 60mm). Moved down to 40mm stem with the same bars for my FM936. Dropper travel was definitely an issue and I had to run a 150mm OneUp shimmed down to 120-125mm.

Now considering the FM936 instead of the LightCarbon LCFS958 I was very close to buying.

In the build planning phase now. Not sure if I want to go with a DVO Sapphire (32mm) lowered to 120mm or a RockShox SID Ultimate 120mm. The Sapphire should be more stout despite having 32mm stanchions too, but the SID will save over 200g. I can't easily get the new RockShox SID 120 with 35mm stanchions.

Any thoughts?

Depends on what you're riding and if you're racing IMO. The new SID looks awesome, but it seems like you can pick up Fox 34 SC's for a good deal on Pinkbike, etc now. I'd buy a reduced offset if I was buying again.

What bike are you riding now? I'm super happy with a 120mm fork riding the shore/Squamish. You can't run an angleset with an integrated headset. Careful running a super long post, you might not be able to get enough insertion to get your saddle height low enough at full extension. And assuming 30mm is a typo, but I'm running a 40mm (tried 50mm initially). I wouldn't go XL at your height.

If you want something plush for BC trails, this won't be it. Definitely has a pretty stiff/XC race feel to it compared to modern 140mm trail bikes. Certainly more forgiving than the last generation of XC bikes though.

Headtube is 120mm tall on the large so you'll have to measure your stem height and add a bit for the headset/any spacers you want. I'd think any brake hose would work as the internal routing is pretty short. Will also depend on handlebar length, I'd never shorten anything until you have it set up.

No way a 5'1" rider would be happy riding a medium FM936. I'm 9" taller with a 40mm stem and it's a comfortable fit for me.

Finally got the new bike out for a quick shakedown ride and I'm really happy with it so far. I ended up putting my 40mm stem on before taking it out and think I'll be keeping it on there. Medium feels great for my height at 5'10".

I was taking it easy on the climbs today, but it's the steepest STA bike I've ever ridden. I'm used to sliding to the nose of the saddle for steep climbs and it's simply not necessary on this bike. I was worried about not being able to reach the shock lever while riding, but didn't move it at all from open (after setting it up at 25% sag). I'll have to see how things go at race pace, but I didn't feel the need for a lockout today.

Descending, it definitely likes to be ridden aggressively with a lot of weight on the front wheel. I'm used to riding my enduro bike like that, but not my XC. That being said, I went over some steep rolls/slabs and it felt just as confident as my 160mm Santa Cruz (same HTA, but significantly shorter reach).

Pro-Mance M7007-II sounds like the perfect fit. Rode mine last year (120mm fork/dropper) on very technical terrain and it was awesome. Just finished building my Carbonda FM936 and it does not sound suitable for your terrain.

A properly installed, quality (not Race Face) PF BB shouldn't be making any noise.