.......too big for what? .....I assume you're aware of the weight ? ........doubles? you're kidding, right?
......you might want to rent the largest steel tank you can find, to see what you're in for, otherwise I'm afraid you'll be making a very expensive mistake.
By the way, I own and dive Faber LP 120's (as singles) and I just took delivery of a brand new set of OMS doubles (LP steel 85's).......so I'm somewhat familiar with bigger-than-average tanks.
I'm happy with the capacity of both configurations, but personally am not interested in anything bigger, especially for boat diving......I test dove for 6 dives a doubles set of OMS LP 95's, in the water they are fine, but just too much weight on land...and god-forbid I should ever have to climb back aboard a boat with twin LP 95's........so I went with the next size 'down' and I think they're just 'light' enough to be managable, especially on a boat.
Karl