Yea, I pretty much have one of the fastest in America. Sucks for US, right? LOL
The best we got now, is just the Google Fiber, and I'm anxious for it to be on this side.
Well you said 101 Mbps which is something like 11 MBs or so (Need a calculator) which is not bad even for delivering websites. It is about magnitude I.e. how many people are accessing content at the same time.
You mentioned that you maxed out a host gator package. The best hostgator package (which is pretty restrictive) is 100 mbps
Uplink, so you have 1 megabit more but your I/O is probably reduced, your hardware is not designed specifically for this task and your setup has it more optimized for a desktop rather than a web server.
You will have other concerns,
Failure: For example the last Mac Book Pro I had - updated, and was stuck in a restart cycle repeatedly turning off - reaching the start-up screen and repeating. Are the users going to have to wait until you can afford a new machine? You are pushing it more than ever - it could happen at any time. In my instance I had to head home and get the disc that was supplied and start again but what if the hard drive goes?
DDos: What if you encounter this? - What preparations have you made to combat this effort?
Attack point: Now that your computer is public facing, what if the machine is compromised? Do you have the knowledge to resolve the issue?
Backups: What if your house catches on fire - no doubt your backups and machines are in the same location.
I could keep going, if the above is not relative to your situation - I will be able to find critical faults in the system.