My daughter just turned 6 and has fired 5 times at 5 live animals. She has 4 animals down and 1 clean miss with 5 shots fired. HOG Saddle is expensive... but it's far cheaper than a gut shot Axis/Fallow/Anything Else.
I've used the HOG saddle, and the less expensive PIG saddle. If you don't desire weight savings... get the PIG saddle. I can't comment on the REAPER (I've never used it).
As far as tripods go... see below...
If you desire to save weight and require a stable shooting platform... I recommend GITZO + Acratech (any other quality ball head would work, but I really like the acratech). I am not at all impressed with the lighter weight tripods from any company except GITZO. Most everyone makes stable 'big tripods,' but GITZO is the only company I found that offers lightweight tripods that I would trust.
If weight savings isn't a priority... Most heavy duty tripods (with multiple leg positions) will be fine. My Vortex Skyline is great. My GITZO mountaineer size 1 is the best of all worlds.
The field pics above are all HOG Saddle + Vortex Skyline + Vortex Fluid head.
The HOG Saddle + Gitzo + Acratech combo is new. It's first trip to the field is this weekend...