maybe... depends on the tangs...
nasos do tend to be a bit 'more peaceful' than a typical tang... although many people woudl say yes, I dont think a 125 is big enough for an ADULT naso... sure you could keep a juvenile for a few years...
by lemonpeel... do you mean the mimic tang? or the lemonpeel angel? mimics, again, tend to keep to themselves more than cause problems...
and carribean blues... nice fish, and for sure they could go in...
I think you could do it, but be prepared to move the naso a few years down the road...
first, I would add the mimic, as they usually take up less territory than the others, then the carribean blue, then the naso... just be careful and take your time buying a naso... make sure its in good condition and eating...
Drew