Hi all

This is my first post so I'll take the chance to say that you have a really nice board here.
I lurked the topics for weeks looking for inspiration for my first conlang. I've been working on it for less than three months, and I've already revised it completely many times.
I'm not trying to create a pseudo-natural language since I want it to be free from exceptions, irregularities and such: rather, I'm trying to make a logical language, but which could be still more or less pleasing to hear or speak (not like lojban

) and possible to apprend (not like ithkuil, even if it is a primary source of inspiration for me

).
I think I've come to a standstill, as I've defined six different cases to decline words in (nominative, accusative, genitive, dative, locative, instuctive) and nine different "quantities" of an object (singular, monadic, associated, complessive, grouped, organized, undefined, set and unitive) plus five word modifiers (that express negation, opposite meaning, equality, intensive meaning, and positivity) and I think that, starting from a relatively narrow list of word stems, I could possibly derive loads of words. It works this way: starting from the stem that means
soldier, I can add the complessive suffix and get the word for
army or add the grouped suffix to get the word for
soldier team, or even use the locative suffix as an affix and have the word for
barracks, and so on.
The problem I'm faced with right now is that I would love to give my language an ear-pleasing sound, beyond a logical structure, but I can't figure out what kinds of rules could I use while creating affixes and declinations to obtain nice combination of sounds! I'm trying to achieve a sound more or like resembling northen languages, like gaelic, celtic, or viking's language which name I don't remember right now

And I'm absolutely in love with the sound of what I think is ancient irish.
If you happen to have any particular suggestion about the structure I'm trying to give to the language, i.e. the cases you chose to put in suck or something like that, I would be really happy in reading them! I'm quite an apprentice in conlanging, so I'm up for any suggestion. I'm not even an expert in glottology, phonology, or any other language-involving discipline, so forgive me if I make newbie mistakes.
Thanks in advance for any help

Jarhead
P.S. I'm not even a native english speaker, if any of you didn't get that

So please forgive my mistakes another time.