GMaxx Single Speed Questions....

Sup guys...just have a few quick questions that maybe somebody out there with the GMaxx single speed tranny conversion kit could answer...

1.) How greatly does the loss of rotational mass increase the speed?
2.) Does a permanent lock in 2nd gear affect wheelie ability?
3.) Compared to a stock E tranny, how does it hold up for maintenance?

Hopefully somebody can throw me a few helpful bits before I splurge 60 bucks on the kit. Just wanna make a good assesment as to whether I really want this thing or not. Thanks guys and Happy Holidays.