Plumbing questions: Moving P-Trap

I added 3 drawers underneath our sink in our last trailer. I relocated the P-trap and waste pipe out of the way as much as I could. I ended up making the top drawer "L" shaped to jog around the waste piping. The short side (on the right) worked out good for spices and salt & pepper. Here's a couple of pics below. I kept the original door in place and used flush pulls. For the drawer slides, I used Knape & Vogt "stay close" RV slides from www.drawerslides.com. They stay closed and you give them a tug to release them. I also had to relocate the PEX water pipes under the sink as they were really in the way. They seem to just throw the waste and water piping under sinks without any thought to functionality.

We only ended up keeping the TT for a year before we got "two-foot-itis" and a new TT. BIL now has the TT and the benefit of the kitchen drawers and lot of other mods I did.