Not really, if you do the setup right then there is no reason to go EFI at all.
As above though, read a whole lot more on the information thats out there rather than just jumping in and assuming it'll be easy. There is a bit of playing around with float vents and things like that to keep your fueling right but a decent reliable setup is very achieveable. I used my 5K-T as a daily for a year with no troubles