even a space RTS can look good. See Star trek Armada 2.
But 2-3 Months.. is extremely unlikely.. Rather, i would write a better Engine than A8, before you finish a Game that is better that ST-A2 or SC2

I think you should be a bit more realistic and honest to yourself


Selling my Acknex Engine Editions (A7 Com & A8 Pro):
>> click here if you are interested <<