Dear Reb Doniel,
May I make a suggestion to you before you choose a nusach of davening that differs from what is found in the machzorim.
With all due respect, your knowledge is heart-warming, but woefully inadequate. You do not yet have a good grasp of the chasmic differences between the nusach of Ashkenazim and Sefardim, nor the ideas and history behind Piyutei Ashkenaz.
There’s alot of material out there from brilliant people who devoted their lives to researching this subject. May I recommend the following books for you to read. After you read them, you will have a stronger foundation on the subject. From there you can make your own decisions on how to proceed as a Shliach Tzibbur. Until then, please be careful, respectful and modest.
1. Yisrael Ta-Shma , Minhag Ashkenaz Hakadmon, Magnes Press
2. Yisrael Ta-Shma, Ha’tfilah Ha’ashkenazit Ha’kedumah, Magnes Press
3. E. Fleischer, Shirat Hakodesh Ha’ivrit Bi’mei Habainayim, Magnes Press
4. E. Fleischer, T’fillot Hakeva B’yisrael B’hithavutan U’vehitgabshutan (2 vol.) Magnes Press
Enjoy.