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Hi Rob
Now is the best time, or in the next month or so. Pre-dawn observing can usually be very rewarding with stable temperatures and good seeing.
Unfortunately the whole east coast is suffering poor seeing at the moment, which is probably why you can't see any surface features.
Over the next month it will rise higher before dawn so it should only get better. And hopefully the seeing will improve.
Also don't forget to leave your scope out overnight too, so the mirror is at ambient temperature before you observe. If you bring it out from indoors into cool pre-dawn temperatures, there's likely to be a 5-10deg different between mirror and ambient temperature, causing tube currents and poor local seeing.
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