Sorry, I have not use windows for years 
I would probably supply the packages after building them in my machine, but it depends on how many dependencies they have, it can be a nightmare (I've done once, with a package with zero dependencies, for people in windows and mac, I provided the zip file I built localy in my machine, and they installed it using RStudio ide with no issues).
Sorry for not being of more help,
cheers
Fer