Re: what are my options for uograding rear 700mm rim?
I would ask how many spokes in your rear wheel? 32 or 36? If it is 32, you definitely would be better off with a 36 spoke hub or 12 gauge spokes with a 32 spoke hub.
I don't think the electric hub motor spokes would work on a regular bicycle hub since the flanges on the bicycle hub are shorter than an electric hub. The electric hub motor spokes would be too short. The ones from JensonUsa are a better quality and you have a better selection to match your requirements.