You’ll be ok. Last time I raced BR was almost 15yrs ago and we were all on 23c tires with 110psi in them. Maybe 120 to avoid flats… Let a bit out of your 25s and stay smooth.
It was a quick race but not very selective until the final pass through the rollers. Save your matches and only follow a break if it’s dangerous/big enough to stick. I learned this the hard way. Dragged everyone over the rollers and rode the front all day feeling good because I shed quite a few riders on the hills only to have 2-3 riders go over the top of me on the last hill. One of my first road races.