Still working on Rayanese Noun Plurals

I’m continuing to work on Rayanese noun plurals.  I have gotten to having two main noun (and adjective) declensions, one with plurals in –ar (basically nouns whose nominative singular form ends in a consonant) and one with plurals in –n (nominative singulars end in a vowel). I’ll use the nouns huz male twin and deru man to illustrate where I’ve gotten to:

Current plural forms (-ar and –n declinations respectively):

nominative	huzara	derunu
accusative	huzarka	derunku
genitive	huzarsa	derunsu
dative	huzarca	deruncu
instrumental	huzarva	derunvu
allative	huzartsa	deruntsu
ablative	huzarda	derundu
locative	huzarksa	derunksu

The consonantal suffixes that represent the non-nominative cases are unchanged from the singular forms.  I am considering voicing some of them to differentiate them a bit more from the singular form:

huz (-ar declension)

	singular	plural
nominative	huz	huzara
accusative	huzïk	huzarga
genitive	huzïs	huzarza
dative	huzïc	huzarja
instrumental	huzïv	huzarva
allative	huzïts	huzardza
ablative	huzïd	huzarda
locative	huzïks	huzarksa

deru (-n declension)

	singular	plural
nominative	deru	derunu
accusative	deruk	derungu
genitive	derus	derunzu
dative	deruc	derunju
instrumental	deruv	derunvu
allative	deruts	derundzu
ablative	derud	derundu
locative	deruks	derunksu

I am still not sure if I want to voice those consonants. In the future, I may also have more declensions just make the language appear less regular.