I have the kit with press mounted primer feeder. But I'd say buy the kit with hand primer.
The press mounted primer feed is only good for pistol where you resize and prime in one go. For rifle cases where I resize, trim, wash again, then finally prime, the hand primer is more useful.
I believe both kits come with the press mounted priming arms. This allows you to hand drop a primer into the priming arm cup without needing the plastic primer feeder. The hand priming tool provides more value than the plastic primer feeders in the other kit.
If the recipient is going to reload rifle cartridges, I highly recommend the lee quick trim die system. Get the delux quick trim cutter with hex shank adapter. It really takes a lot of frustration out of trimming.
Also buy enough quick change bushing for the die set. I'd buy 4 extra (they come in 2 packs). Combined with the one that comes with the kit, you'll have enough to get started on the first caliber.
A $40 milligram electronic scale from amazon will be much faster than lee's beam scale. But you need to teach the kid to deal with the drifting zero of electronic scale (which happens on most electronic scale and IMO is a valuable skill to learn).
The perfect powder measure comes with the kit can be very consistent. The trick is to not apply too much force when operating the handle. The inconsistency comes from the plastic drum housing deforming when pulling down the handle too hard. Be gentle and you will achieve accuracy within 0.1 grain.