no problem at all, I'm always glad to help

UNFortunately, you're starting to ask me a few things that I dunno :-|
it comes with a 7.6v rechargable batt. the board can handle a 9v battery, but I have it on good authority that the gripframe doesnt have enough room inside it to fit the 9v because it's bigger than the 7.6
one of the things that I would definitely recommend upgrading....and this is gonna sound wierd. is the battery charger. take it down to radioshack and tell them that you want one with an anti-overcharge circuit. a lot of peeps fry those batteries by leaving them on the charger for too long. and since NOBODY can agree on what "too long" is for them, this is the best protection you can get to preserve the life of that battery.
as for the modes...this is one of those that I'm not sure of. They are listed as having semi, and auto mode. Now.....with the dragun's....auto mode could have been Full Auto, or just a more responsive version of semi. They were only full auto if there wasnt an eye board. which...the RX has. BUT....the ToridX (now the Odyssey r-1 and r-2) had Semi, three burst, and full auto. Where none of the draguns did. so I'm not for sure. I'll just say that it has semi, and auto. whether it's full auto or not, I'm not sure. But I am sure that it doesnt ramp. not with the stock board.
The reg I'm not sure of the max output on. so I dunno if turning it all the way up would work or not. But....I do know that you can gut the internals, seal the threads of the end cap/pressure adjuster (teflon tape or thread sealer) and then have the end threaded and tapped with 1/8 npt threads for a plug screw. And then just use it as an asa, with a side-mounted airline. Or run a straight fitting, or angled fitting from the newly threaded hole, since they use the same size screw and thread as the plugs do.
the gun itself should be able to mechanically shoot up to about 18-25 bps with the stock parts. any faster than that, and you'd need a faster/better ep solenoid. which....I'm afraid I cant recommend any upgrades on that particular part. afraid I dunno much about ep solenoids

But unless you're using bounce, or other than semi auto, its hard to find somebody with fingers that fast.
Edit- I'm asking an odyssey knowlegable fellow over on pbn about those things that I'm not sure of. I'll post again once I know for sure. But if you can put a t-board into it, then you can use an ultra chip and get those settings.