well, you can expect to get steady payments. You should get all your coins sooner or later it all depends on rate of finding blocks and stuff like that. Keep in mind that all those numbers are fixed values of shares and payouts are affected by founding a block. Which means slow blocks slow payouts, fast blocks fast payouts.
it doesnt really matter on which network we mine, in the end we will get same payouts everywhere.
you will get paid as long as you have valid shares in database, even if you are not mining. You should probably, as everyone else, read how this payout system works http://eligius.st/~gateway/faq/capped-pps-recent-backpay Might shed some light on your situation