£635k mortgage too much?

I’m 25, total comp £125k (sales so variable but have never missed target and this year will clear £150k).

Have £110k saved for a deposit and am looking to buy in London at the ~700k mark.

My logic is, my salary is likely to rise this year and I can see myself greatly exceeding targets, which would help me pay the mortgage down in the next year. I’m also young, so a 35/40-year mortgage seems sensible at this point in my life.

No s/o or dependents, no (student) loans.

Have an AIP for up to £635k on a 5y fix/35y term.

Checking back on payslips, I can make the payments even on my worst months.

Am I missing something, or should I be maxing myself out?

EDIT: added AIP details