Re: Which way to go
As long as you buy a kit that includes the U-bolt front mount, it will mount with no mods to the bike. (aside from some bikes needing the coaster brake arm bent to clear the ragjoint bolts.)
Also, remove the fenders before you ride!
(search the fender threads for the reason why)
If more is better, then too much is just enough.
If you can't afford it, build it yourself.