Get a clamp-on rack that goes to your seatpost. Nashbar had some nice ones that would even take panniers. You may need a lightly longer screw though for the clamp part.

Use Velcro for your morph pump on the frame. Like the Velcro wrap for power cords and tie it around a frame tube or your seatpost if necessary or along a rear frame arm.

Minoura water bottle mount most anywhere. Or get one of their double ones that go under your seatpost.

Don’t buy Marathons. They are heavy, slow (compared to others) and don’t ride well. I’d highly suggest Big Apples over Marathons any day. Apples are the comfiest fast tire you will probably ride on. They are not THE fastest but they are pretty good. Faster than the Marathons I had and tossed. Another option would be Scorpions in the 406 size. They are very fast tires too.