really? that doesn't sound so good. You make 2.40 to 2.60 usd a day then. You can mine almost any coin and get much better than that. 426 k/h on doge would be 4.00-4.50 usd a day before power costs, check here with your hashrate because 90% of the coins will make you more than you are currently getting. Might as well make as much as you can.
http://www.coinwarz.com/miningprofitability/litecoin/?hr=426&p=300&pc=0.0950
Coinwarz doesn't take into consideration variability of difficulty or fluctuations in price.
That's why you go with coins that have a high difficulty because any slight fluctuation in difficulty won't have a big affect on the value. If you see a coin on Coinwarz with 0.4 difficulty it's fair to assume it should be avoided because when 50 miners hit it the value will drop a lot.