Dan25- Thank you for all that information. I have done my research on the rifle itself, that's why I settled on the Benjamin Armada. I'll be going the 4.5mm caliber, as I can buy those pellets easy while I am in town and I haven't yet had the need to go up to something bigger. I've taken down crows, rabbits, snakes, even a coyote once. The Coyote was raiding the neighbors chicken pin, so he asked me to come over one night. Took one shot at 30 yards to do the job, I took a followup to be certain though. I did that with a 4.5mm Gamo Whisper Fusion Mach 1, so I'll stay with that for now.
The scope included in the package is a 4-16x50AO scope with mil dots and parralex from 10 yards and on out. Depending on how I like it, I have a spare 3-9x40 that I am already used to using.
The bi-pod is the other accessory it comes with and is adjustable 6"-9" although I personally have never had a bipod, I look forward to the added stability.
As far as the pump vs. tanks vs. compressor deal. I can't use a compressor in the field so tank or pump are my options. I will buy the hand pump regardless, just cause that's how I am plus I don't mind the extra work. There is a fire house about 2 miles from me, so I'll go talk to them to find out about getting old tanks from them and filling them at the fire house.
I have heard PCP's like heavy pellets, I currently shot 7.4 - 8 grain pellets. I have some 10's but my Mach 1 hates them and never shoots them consistently. I learned long ago though, that different air rifles and pistols like different pellets. Any advice as to pellet weight would be greatly appreciated.
I don't plan on tuning as I have no knowledge or experience in that area, I prefer to shoot stock and practice and just zero my scope based on how my rifle shoots.