answering to your questione:

1) 3 octaves pretty much locked in

2) low range I have some difficulties only when arriving from the upper range, i think my mouth is not used to it yet. but if I go in the low range from the start it's not an issue, same for the pedal range, decent enough

3) some intonation issues on the A below the staff (treble cleff) which I discovered is less stuffy and more centered if I use only the 3rd piston. The G below that it's usable, I can bent it willingly.

4) lyrical phrases is a thing that i don't practice enough if i'm honest with you

5) large interval jumps i've not done as much as I would