Not quite sure how the beers will turn out, they could possibly be just fine. For the Smoked Wheat, If after topping-off the fermenter with water you hit the original gravity, then it should turn out great. The Maple porter may just have a slight burnt taste, but since it's a Porter, it may not be something you would even notice...or it may be an added good flavor that you didn't expect. Time will tell on both. Let us know how the beers turn out.
I do small batches too, and one thing I'd recommend for your next batch is to get yourself a small 2 gallon beverage cooler and a mesh bag for mashing. It can be difficult to mash on the stovetop, and the cooler will save you from a lot of stress, for very little money. Try a thrift store or hardware store like Home Depot for good prices on the cooler.