I fly a 235 that I bought into 5 hours into my training. I was flying 140's and 160's prior to that. It's not a huge transition...have to get used to the power of course...cool thing is you get your high performance endorsement during training...or as my CFI called it, "The Right Rudder Endorsement".
Big thing transitioning from high wing to low wing, especially to an airplane with more power, is dealing with ground effect. If you bring the 235 in too fast you'll float halfway down the runway. Learning the numbers is key.
Also, the glide ratio for a 235 is low. When you cut power, you are coming down. Practice your emergency outs to get a feel of how much time you have.
Only downside, if you can even call it that, I have with the plane after flying it for ~150 hours is the fuel consumption. Expect 12-13 GPH real world. It will effectively double your fuel cost during training compared to a 152/172 or a Warrior type Piper but you are probably like me and wanted to do your primary training in the airplane you are going to be flying when there's no CFI in there with you.
Best thing about the 235 is it's a mule. Check the numbers out - it will carry as much as it weighs empty. Even with full fuel you have around 800lb's left for butts and bags. One of my partners has flown the plane non stop from Austin to Colorado with 4 dudes and the back filled the gills. Pretty impressive platform. My CFI is an old timer and said the when the 235's came out in the early 60's they could carry more than the early LearJets.
Enjoy it man - if you ever have any questions feel free to reach out. We do a lot of owner assist maintenance, etc... so happy to help in whatever way I can.
And yes, this thread is useless without any pictures.