Glen is correct with regard to inbound. Buy if you mean outbound, similar reply. There is no C/I as it is considered a domestic to domestic connection.

If the connection is shown on the airline booking site then it meets the "legal minimum connecting time" requirement. In the old days, connection times were published in the OAG, Airline GDS still have that info. If in doubt call the airline and ask if the connection meets the minimum connecting time. Minimums take into consideration airlines, domestic to domestic,domestic to international, and reverse situations.

This also assumes the travel is on the same ticket, checked baggage. Two separate tickets with checked bags presents an entirely different situation.

What is CRAZY is buying a May 2017 ticket this far in advance! The airlines don't have fare sales six months in advance. Besides, May is not a peak season or holiday time. No reason for you to worry about flights being full. Look at flights and then check seat maps, you'll see wide open seats -meaning that very few tickets have been actually been sold.

No way in the world would I buy this ticket this far in advance. 90-60 days will be when you will see some realistic fares. Use Kayak and set a fare tracking tool to watch airfare from city pairs.