I came to the conclusion 1250, 1500 or 2000 satoshi / 240 minutes, with a 50% (for the first weeks at least) ref commision. Now to the question, would you consider this good for a new faucet?
For most of the faucet users thoses rewards are great, same goes for the referral commission.
For you i will give an example, 1400 (average payments) × 3 (average claims per day) = 5200 × 1000 users = 5.200.000 satoshi + 2.600.000 (ref comm) = 7.800.000 satoshi = 0.078
BTC = 27.5$/day
The number of users, claims may be less or more than what I picked so if you think you can afford this then you will get many users/traffic else think again