The Maharaja should start around 1.090 and finish around 1.012.
Mine started at 1.102 and I just took a gravity reading in secondary at 1.014 for 86% apparent attenuation and 11.7% ABV. That is with all malt and mashed at 151*F for 75 minutes just like the brewery does it, and fermented with the Wyeast 1028 London Ale yeast!
No sugar necessary here. Besides, the Maharaja is supposed to be somewhat malty to balance the hops. If you want a Pliny go brew the Pliny recipe instead. This ain't Pliny.
Aerate well, pitch a huge starter (I pitched a 3L starter stepped from 1L into each fermenter) and it will finish just right.
The alcohol heat is very high, and the hop aroma isn't fully developed yet after a week, but otherwise this is already a dead ringer for Maharaja. Warm and flat it tastes like I left some Maharaja sitting out overnight and am tasting it in the morning. It's awesome.
When we go to bottle this beast my calcs show if I add 2.5 quarts of water with the priming sugar to each bottling bucket we'll end up at the proper strength for Maharaja.. since my efficiency rocked down da house.
