Negociation after a year + exit opss (incl. Eastdil Multihousing Associate)

Hi everyone, 

Situation: London based - Working for 11 months as an Investment associate for a residential investor. Very nascent company, amazing atmosphere and people, reporting directly to partners and head of invest, encouraged to source deals... 

Salary: £80 + I suspect bonus in Dec/Jan in the region of 30%

Main issue is clearly the remuneration + the fact that I can't see what the remuneration could be in 1/2/5 years (I'm supposed to have that discussion before Xmas). Our capital partners are US bank / funds, working standards are PE like.

Given recent deal flow and very well known partner, I had the chance to land interviews: Currently interviewing for a similar role in 2 different companies with similar strategies / team size. Package: £100k£/110k + 50/100% bonus. 

+Eastdil just called for an Associate role in their multihousing team

Questions:

1. Is it realistic to tell my boss + CEO in December that I'm underpaid and that I'm willing to accept a cut vs. our LP's associates being at £110+100% working crazy hours and deserved their roles at major US firms but that I'd like to be at the same level as direct competitors (call it ~£100+ 75%) - Should I back this with an offer and be ready to leave? (I would really want to stay but you can't accept being at ~£100k when you can almost double for the same job and I suspect the gap will only increase years after years) - (In my previous role I managed to get from £50k analyst to £75k associate after 1 year with a 60% bonus after providing solid comps and "proving" I was underpaid, so I believe there is hope)

2. Any idea on compensation (base and bonus) + hours at Eastdil? Profiles I saw on Linkedin are miles away from what I usually see in RE investments: ~25 years old VPs after 5 years at Eastdil, top uni only... (I don't think I could move to a place doing 9/12 daily for a similar remuneration)

3. Have you ever asked for a "plan" for the next years in your company remuneration wise, range for base / bonus / LTIP ...?

Thanks all