hi chris

in general i am sure your varied projects can work together as one portfolio ,,
aside from matting ( window mats ) and everything having the same size matboard as
the backing ( all the images being on 11x14 or 16x20 board ... )
if you do groupings in you different "looks" you should be OK ...
each grouping from whatever format &c will be like a miniseries / family working together.
even if they are different cameras/formats as long as they are in the same string/thought &c they will work ...
begin and end with your strongest images ( both in mini series and total images )
first and last impressions always make a difference.

good luck !
john