Easy!
I'd combine PH units 4601 & 4602 at Casa. I'd re-design the plan with bedrooms, a workout room, den, laundry room and a soundproofed movie room in the south-east area (currently #4601). In the south-west area (currently #4602), a large, functional kitchen with breakfast area, dining room and living area. I'd choose Casa for several reasons, it's at the top of my list for favorate condo high-rises in Toronto, with good amenities and great location. I've lived in this neighbourhood for over 25 years and I love it plus I really like this section of Charles East including the wonderful chain of parkettes right next door. I can't see anything going up nearby to block views from this level and speaking of views could city and lake views get any better than from here? I also love the roof deck feature, I'd have a hot tub up there and I'd work with the developer so that we could work toward a green roof with as much green space as possible.
I would live happily ever after...