I'm trading up my 6 to a 8ft tank (i don't know the gl I am Australian!)
i'm planning to keep 2 silvers in that, I already have a large one @ 26inches (in the transaction of selling)
I would hold off getting it until you do some research on them, and have a good setup.
9 weeks until your get your big tank, and then 2 or so weeks until you break it in with the filtration getting the temp and PH right etc... fish keeping, there is no rush. =) that's the beauty of it.
relax a little, take your time. it's not going anywhere =P
I've spent over 2 months looking for a 8ft and good aquarium stockers of RTC (red tail cats)
all the best dude!