So, not an acoustic gig at all then, really.
I do get the point, but here's a thing ... how small does FOH have to be for it just not to matter?
I mean your vocals could use megaphones...that'd qualify as acoustic.
And why bother even claiming a gig to be acoustic when it's not?
Is that to appeal to some sort of hipster-ish notion that 'acoustic' equals more authentic ... or an attempt to delude a bar owner that he's not getting a fully-fledged rock band in?
Are you likely to get more money or better gigs that way?