Regarding filling up...
Another option you can look into is a "Shoe box compressor" it hooks up to any regular air compressor (with some minor requirements, can't recall off hand) and you're good to go, fills up to 4500.
Bit pricey though, the shoe box compressor it self runs for ~$500-600, plus the compressor it's self (a hundred or so?)
http://www.shoeboxcompressor.com/
Or... look into a Benjamin Hand Pump, a few other companies besides Benjamin make this style of pump as well.
It's essentially a bike pump on steroids, goes up to 3,000 PSI. Takes about ~2-3 hours to fill.
http://scopesandammo.com/storefront/...and-pump-p-169
I've got one coming soon.