14 Months is of insurance is actually totally normal on financed transactions. With homeowners insurance you always pay one year up front ( 12 months) and then typically start paying monthly installments towards next years premium. if you put down less than 20%, most loan programs will require you to "escrow" your taxes and insurance.
At closing, a "cushion", usually 2 months, is deposited in your escrow account. There are federal laws in place that force lenders to retain a certain amount of cushion in your escrow account, the reason for this is so that there is money to pull from if your taxes or insurance increase, instead of just submitting a delinquent payment.
When taxes and insurance go up, you will get an escrow shortage letter, and they will adjust your payment to make sure the required cushion is always in the account.
If you put down 20%, most lenders will give you the choice on whether or not you want to escrow for taxes and insurance. Some lenders will allow you to waive insurance on less than 20% down, but all will require an escrow for taxes if not putting down 20%.
As far as the insurance company re-trading on your premium, this has happened to me as well on an older rental property in NH, they did an inspection and discovered old wiring and jacked up the premium, I shopped it around and it seemed to be par for the course on an old building like that. They all said if I made a few improvements to wiring premium will go down.