The author of six published novels (including a historical novel set during the Russian revolution) and a short story collection (see my freelancer profile for full details), I have over twelve years' editing experience. In that time, I have worked with all kinds of different writers (from debut and self-published authors to the far more established) writing in all kinds of different genres: literary, historical, romance, crime/thriller, YA, fantasy, sci-fi etc.
Familiar with all publishing industry standards, I will edit your 90,000 m/s in three stages. Firstly, a basic edit to eradicate any typos, grammatical errors, etc. Secondly, a more creative edit focusing on sentence structure, pacing, word choice/flow etc. Thirdly, a final edit to ensure that your m/s has that essential professional polish.
Additional info: I use Track Changes in Word and can make a start right away.