Very Cool! great work!
Congratulations on the baby!
Hope this venture turns out well for you!
About the game:
Story
I would like to recommend some advise about single player games regarding story line. In my experience, very few indie games make it far without a great story. Graphics, game mechanics, and play-ability are all important to making a game successful, but none as important as the story!
Your story does not necessarily need to be super complex, but enough to entertain and immerse an adult. By the looks of this your target age group is 12-25yrs, so keep it PG-13 rated. Nothing explicit or containing adult-only content. Knowing you are soon to be a father, use your instinct when evaluating the story content and whether you would want your child exposed to it at the target age.
Motivation
Find what motivates you! this is extremely important when working on a project and seeing it through. Most indie projects fail when they lack motivation.
About Professionalism:
I think that a good website will do you well. Google some tutorials if needed. I use WIX.com because of their HTML5 setup. Drag and drop components make it super simple! They have free hosting for as long as you need it, with limitations of course.
About going big:
Be realistic, this is not going to be the next COD/Battle Field any time soon, but look at where they started. (I can tell you it was less than what you have.) you are in the wrong business if you think you will be a millionaire off of video games, however, if you put enough hard work and dedication into the game and make something worth people's money/time it will be rewarding to say the least.
Graphics and artwork:
Looking great! could be better with a little work. Try doubling the poly count, smooth your edges, and use a PBR shader with Unity5! May I recommend Substance Live ($20/month until payed off):
https://www.allegorithmic.com/(I'm using this myself, I'm not that good of an artist.)
Level Design:
I recommend using pro-core while constructing. The basic is free: see here!
https://www.assetstore.unity3d.com/en/#!/content/15447 -Full Ver.
https://www.assetstore.unity3d.com/en/#!/content/11919 -Free Ver.
I would also recommend publishing a DEMO of your game to a webpage in the future. (Doesn't have to be too fancy, but it should incorporate at least one level of your game to get people hooked.) There are a few tutorials in the unity forums on how to do this as well.
Need help or have questions, just ask! This is a very friendly community!
Hope this works out for you!
Warm Regards,
Marshall Belles
Bellesgames.com