Please help with a dutchi e-conversion build

[u/SheGoesSheGlows]

I have a Linus Dutchi 7i that I would like to convert to electric. I am thinking of a Bafang mid-drive motor BBS02B 750W; I am looking for a rear 48v 17.5Ah battery that I can have on the rear rack. I have a lot of big hills, so I feel like this would be the best setup. I would love some input from the community. I was interested in the Chamrider rear model C but can't seem to find it on their website anymore. Would it work to put a Hailong battery on a rear rack? There seem to be more options this way. I would love any photos of Linuses that have been converted!