I like your plan! I'm a bit sceptical about the Mojo but that's just me. When you are ready you could contact Gisele at Aid2Hearing in North London. She has the full Noble lineup for audition, try the N4 as well as the Savant. Gisele also has the Mojo. The K10 would fit the sound sig that you describe perfectly but that's outside your budget. Gisele is a qualified audiologist and can check your ears and take impressions should you wish to go the custom route.