Just avoid corner lots, they tend to always be the biggest.
It's not the size of the lawn, it's how you use it
.. (sorry had to). No, it's strategy
. Any lawn is good as long as it has a minimal amount of obstacles for you to maneuver around - everything in return will be dandy!
You have all you need to be a successful operation. I would only advertise lawn maintenance, keep your minimum price average/high. Reason being, is because if you want to sell your service for cheap just to get yourself started, it becomes very
difficult to raise your prices later (hearts get broken)!
If you plan on selling yourself for less than the competition, only offer those prices to simple lawns, nothing more - ever!
As for snow, I'm not sure how the weather is where you are. After one driveway from down where I am, you'd need a few shots of Jack, and a power nap (100 hours) before you even think of doing another one with a shovel OR even a decent snow blower.
Snow removal is hell, and there isn't much profit to make for the limited amount of time/energy you will have to spare. Stick to walkways if you have a lot of snow.
pictured above: How I see myself telling the story below.
When I first did driveways, being a business owner I really pushed myself for any stupid reason. I'd break my back and do 10 or so driveways with snow up to my waist, with just a shovel. PAIN PAIN PAIN. My commercial snow blower couldn't even make the snow flinch because it gets so solid.
Nothing sucks more than being wet, frozen, exhausted, and being rushed to satisfy the demand. Those with tractors will have you beat, there is no way to compete with them, no way!