He is gonna be using his bike for basic transportation like going back and forth to work, going to the store for a few items etc.
He has stated he is on a budget starting life all over again with next to nothing, not even tools in so many words or less which is why I pointed him to my tutorial on how I built my street riding bike which I built for the purpose of basic transportation and getting to the grocery store, etc. all on a Social Security budget.
It's gonna be a whole lot cheaper and less labour intensive in the long run then buying expensive Gemini rims because stock rims are too weak and gutting out the coaster brake is yet more labour to deal with not to mention constantly adjusting the caged bearing assemblies rather than a sealed bearing axle that come with the mags I use.
Caliper brake sets, dealing with rag joints or hub adapters when he can simply do the 3 spoke mags that come with the directly mounted 36 tooth Steel/chromed sprocket and directly mounted disk rotors and disk brake calipers and pads much, much, cheaper and a lot less labour and finagling around than buying and installing all these other parts piece meal.