No doubt, a scale and some type of priming tool are great but not a "must" just to get started. As long as you follow the powder recommendations and don't "double dip" you will be fine. I have checked many of Lee's dipper listings and have found them to always have a bit of a safety margin built in though I don't recommend them for use with max or near max loads.
Everyone needs to be careful with dippers or fixed cavity measures since some powder manufactures such as Hodgdon have changed some of their old stick powders to new "short cut" versions which no longer have the same weight-volume ratios.
Yes the "beat 'em in" priming method is poor at best but as long as you have a piece of wood under the priming chamber while priming you can easily hear when you have hit bottom, the key is to tap, not beat! I have loaded many 45 Colt rounds in the middle of nowhere and never set off a primer.
The Lee Loader is good enough for what it is intended for, getting started and field use. If one decides reloading is not for them they stand to loose little. If they upgrade and no longer use the earlier stuff there is always someone else who it can be passed on to with a bit of advise.
I have two fully automatic Dillon XL 650's as well as a host of other presses and gizmos yet I still enjoy the hammer method every once in a while, it make me appreciate not having to do it anymore if nothing else!
Paul