Are you able to exceeded guarantee on either of those equipment types while on reserve?

It's possible through RSA (reserve augmentation) at 6:18 credit per day, but I wouldn't count on it or base my budget on it. FO RSA isn't as common as CA RSA.

Can one credit in the 95-100 hour range first year, if not, what can be the expected credit once off reserve?

Once you're off reserve, yes. However 95-100 will have you working 17-19 days, and many junior trips are uncommutable.

I know the new reserve rules were just put into place, but how easy is it to change your schedule and or swap/drop trips?

From what I'm hearing, not at all. There are reports of people unable to swap from a 3-day to a 4-day over the same days, and also from two 2-days into a 4-day over the same days. Therefore I'd imagine swapping into different days is next to impossible under our industry leading scheduling provisions.