After some gruelling hours of DIYing the bookcase, table and shelf, the study is almost complete. Just need a few more touch ups and we're done with this room.
Fixing the table and the bookcase was a singe. But installing the shelve onto the wall, well that really sucked. Half way through drilling, realised that I might have hit a rebar inside the wall, cos the drill bit was wearing off, and there was burnt steel smell, but the hole wasn't getting any deeper.
There wont be a next time though, cos I'm definitely paying Ikea the 6% for installation.