I am assuming that your A/C compressor is junk, you do not have or do not want to spend the money to fix it and this is why you want to run a different belt. The best way to get around the A/C compressor is to remove the compressor and install a "bypass pully". A company named DORMAN makes one specifically for what you are wanting to do. They are available ay many aftermarket parts suppliers.

I cannot give you the part number because I do not know which engine your Bonneville is equipped with. Here is a link to the DORMAN bypass pully catalog. https://www.dormanproducts.com/documents4rb/2600025ACBypassPulleys.pdf