What were you averaging last year mate? - By the sounds of it you're pretty decent
I'd weigh up whether you want to play cricket for fun, or earn some extra cash on the side...I think that if the new guys aren't as fun to play with as your old team-mates.
Depends whether you'd really want the extra cash that much really. If you don't, then stay at your current club, keep enjoying your cricket and keep flourishing.
There is obviously the possibility you could underperform at this other club next year due to added pressure..
Do whatever you feel is best mate, sure however it turns out you'll be fine