You have so many options, here. Just about anything that doesn't rely on super young hop explosions or ridiculously long aging (barleywine) is a good option.
So your beer is ready for drinking in, say, seven weeks. So it gains three months of age on it and goes from good to great... what's the problem?
Seriously, I did a brown ale at the beginning of January that was good from day one. At four months, it became outstanding. Had one last night, and am truly sad that the box will be empty soon.
That being said, I love my darker beers, but I am currently in love with Revvy's Belgian blonde (a Leffe clone). At about eight weeks in bottles (three months after brew date), this beer is amazing. Light in color, sweet but not cloying, with some nice spicy and fruity notes. Really superb.
Revvy's orignal recipe is
here on the thread; I did a PM of it and would be happy to share that if you decide that this appeals to you (i.e. if you don't do all grain... you didn't say).