So the Wavesport web site says the weight range for a Diesel 75 begins at 140 lbs. and you are 135. While you are just outside the lower end of the suggested range, with proper outfitting, aggressive posture, and positive attitude you should be able to paddle this Diesel.
Take time to outfit the boat for you. You probably want the seat moved forward of the neutral position. Make sure the back band, hip pads, and foot bracing are super tight. Try the boat on some class 3 before you get into harder stuff. Catch a thousand eddies, roll it a lot, surf, play, get rad. Don't let the boat get pushed off line, you have to boss it around.
These days people are paddling gigantic high volume creek boats over 90 gallons like the Recon, Shiva, and Karma. You just have to charge.