1. Go to wally world and get a gallon of their version (Super Tech) of TC-W3 Outboard Motor oil (about $13). The mix ratio recommend by Steve in Florida is 1 to 2 oz per 4 gal of fuel. I've been adding 1 oz if the bike is going to sit up to 1 week, 2 oz for longer periods of inactivity. The purpose is not to lubricate but to prevent evaporating fuel in the carbs from leaving a film which clogs the jets and tributaries. I've seen no decrease in mileage, although, when using the 2 oz concentration you may notice the slight aroma of an outboard motor when sitting at a traffic light.
2. I don't know about Colorado, but here's what it says in Texas about emission control tampering:
(b) No person may remove or make inoperable any system or device used to
control emissions from a motor vehicle or motor vehicle engine or any part thereof, except where the purpose of removal of the system or device, or part thereof, is to install another system or device, or part thereof, which is equally effective in reducing emissions from the vehicle.
If it's not broke.... Besides, the only advantage would be a few less hoses (4) to remove when doing a valve adjustment.
3. If you are sure you’re not overfilled and this is the your first oil change, give it a little time to clear itself up. I have to use a flashlight or be in bright sun to see mine. The alternative might be to use a stiff wire with a swab securely attached and snaking it down to the window through the oil fill plug. Personally, I'll keep using the flashlight. With my luck, whatever I stick in there would stay!
And as Mike said, overflow tubes (if they are not already installed) and a day at Steve's spa for cleaning.