I would prefer either Spanish or English pronunciation for aeiou.
This would at least the vowels simple.
Spanish vowels have one sound. English letters aeio could be simplified to the names of those four letters.
u could be like the oo in "moon". Whatever you decide, one sound for each vowel, would be my preference.
As for consonants that is a little more complicated, although most of them would be similar to English, of course.
So something like
a - b
ody
e - s
end
i - w
eek
o - dr
one
u - m
oon
ai - l
ime
ei/é - s
ame
oi - t
oilet
