As long as you have a hiding place for the pleco, it should be fine.
Zebra danios and cories will be fine in higher light levels. A lot
of people including myself have much higher light levels in their
tanks with no problems with fish being stressed.
Infact my cories just started spawning in my 46G tank that has
110Watts.

Still would like opinions on light, particularly with reference to
possibilities of increased light intensity stressing fish: zebra
danios and clown plec; adding some corys at a later date.