It is indeed no less than brilliant.
Callahan, the transition from
RIP to
Batman Reborn can be very jarring considering that Batman exits the storyline due to events in
Final Crisis in between, so I'd suggest grabbing just one issue from Comixology to helped bridge that gap,
Superman/Batman #76. This covers the Bruce and Darkseid confrontation, the moment Dick and Alfred learn of his disappearance, his funeral, the Battle of the Cowl and an argument between Dick and Superman over the future of the legacy. It provides the emotional catharsis and fallout that is somewhat missing from the main event (one a flaw of the Morrisons run). I'd wouldn't suggest you grab
Final Crisis if you're simply wanting to keep up with the Bartman run, it's a beast of its own and Bruce appears on maybe ten pages across the entire trade. The Final Crisis bits are also recapped in a later Morrison trade,
Time and the Batman.