Spare parts kit

As a talon SS owner, lets say I want to tinker with the gun, or be able to resolve any problems that may occur out in the field.

1. What Airforce parts should I order and have on hand just incase?
O rings?

2. I have a chrony and I want to try to get more power out of my stock SS. I already have the Co2 adaptor (with the condor valve) what parts should I order to play with?
Condor weight? and?

Any ball park figures of the power in fps I could gain with easy mods and my stock 12″ in .22?

Is it worth messing with?

Thanks
Roger