Congrats Mark.
I have the same boat, 1998 640LX with 90HP. I love it. It is my first bass boat and I have learned so much with it. I bought it used from the original owner about five years ago. Like Raincloud said "the fish dont care", he is corret. I have fished touries and have won several times. I have made several upgrades sense I bought it like:
Dash Humminbird 798SI
Dow Hummingbird 728
AMFMCD Radio
Side deck lights front and back
New compartment openers (straps broke)
Re-decaled the motor
added some diamond plate on the trailer
Enjoy the new boat.
Dan