If those are the only fish you have now it should work fine. Just a warning. Your kenyi (blue with vertical stripes might turn yellow as I think will happen based on how light the stripes are. This is the mature male coloration) the johanni (blue with horizontal striping could grow to be nasty since they are a bit more aggressive since being a part of the melanochromis genius)
Overall I think those 4 fish will be fine. Cute clown loach, mine has been with Africans for over 2 years.