This might give you a better idea. I'm working at 65% efficiency.
http://www.craftbrewer.com.au/brewing-pages.asp?NewsID=9
Amount Item Type % or IBU
2.80 kg Pale Malt, Maris Otter (Bairds) (5.9 EBC) Grain 66.19 %
0.50 kg Maize, Flaked (Bairds) (3.9 EBC) Grain 11.82 %
0.40 kg Munich II (Weyermann) (16.7 EBC) Grain 9.46 %
0.20 kg Wheat Malt, Pale (Weyermann) (3.9 EBC) Grain 4.73 %
0.10 kg Caraaroma (Weyermann) (256.1 EBC) Grain 2.36 %
0.10 kg Caramel Wheat Malt (Weyermann) (90.6 EBC) Grain 2.36 %
0.10 kg Carared (Weyermann) (47.3 EBC) Grain 2.36 %
0.03 kg Chocolate Malt (Bairds) (886.5 EBC) Grain 0.71 %
48.00 gm Goldings [3.70 %] (60 min) Hops 16.0 IBU
40.00 gm Goldings [3.70 %] (20 min) Hops 8.1 IBU
30.00 gm Goldings [3.70 %] (15 min) Hops 5.0 IBU
30.00 gm Goldings [3.70 %] (10 min) Hops 3.6 IBU
30.00 gm Goldings [3.70 %] (5 min) Hops 2.0 IBU
1 Pkgs CraftBrewer Windsor (Dried Yeast) Yeast-Ale
Mashed at max 64c. Single infusion batch sparge
Over all I'm happy with the beer, it's pretty bloody nice just a tad on the low side so you're right T.D, this one is a driving beer. Will be VERY handy
Ross - thanks for that info, nice and handy!