Hi there I would definitely go to a CCC for treatment - that's important - but your dr is right in track with treatment for this particular type of cancer. Firstly - hopefully it's an ENT with a strong background in dealing with tongue/oral cancer (preferable one wh deals exclusively in it ) secondly have they mentioned a neck dissection? This is often part of the treatment for this cancer - even if your nodes come back clean on a scan - microscopic cancer can be there and undetected.
There are different kinds of oral cancer. Usually oral tongue is NOT HPV positive - and it treated first with surgery then depending on the pathology possibly radiation and chemo. HPV + cancers respond more readily to rads and chemo so they are often the first treatment offered (unless it's found in the tonsils).

Compared to each other believe it or not the surgery while daunting is way les disruptive and catastrophic that rads and chemo. Hugs and welcome