I would not rush into this. slow down, really and i mean really think about this.
what fish are must have
what fish are man that would be sweet
what fish are hell if I am dreaming here...
looks like you're a tang guy I feel the 80 would be to small for what you want long term but if you want a few small wrasses and other fish 4" or smaller it would be good.
deff. a good deal.
if you like tangs just get the IM 200 its a great tank! the peninsula is even better
if one is going to upgrade do it right the 1st time.
now all that said there is a sweet spot in tank size ,price and what fits your budget and home.
the IM 112 looks like its a sweet tank too.
others brands to price out and think about are:
fiji cube
pro star
cade
glass cages
water box
SCA
or you could just go all out crazy and build a DIY plywood aquarium and have all the tangs...haha
good luck man! I know the feeling of tank shopping, its exciting but also a bit of work.
edit: I am a fan of the ext overflows. some brands the overflow is huge...