belgian style dobblebock

i started a 5 gallon batch today. the OG was 1.082, the highest i've ever tried. i'm worried that my yeast will give out and that i probably should have done a yeast starter. my target FG is 1.030, which would put this beer at almost 6.9%. this one is gonna need at least 4 months to age, so i won't be tapping it till the Feb 2006 at the earliest. man that's far away. here's to hoping i didn't screw it up.