Josie, your ROM is fine. Considering buying some time, giving yourself until 4 months, which is the outside date orthos will generally do a MUA. Continue the soft approach. You'll be pleasantly surprised. You are at an acceptable ROM that will probably improve faster if you don't push your knee. For crying out loud, it's your knee. If you get to 110 by the outside date he'll do MUA, that should be just fine. I gave up self-PT at 110 and it increased to 130 by one year.
Ray, my ortho said in the old days they did manipulation in the office. Gave a sedative and bent the knee. It sounds forceful but once you're under anesthesia, not much force is (or should be) used. My ortho said they grasp the top of the lower leg, just below the knee, and gently bend. When mine was manipulated, he felt three small pops and one big pop, which is the adhesions breaking. Look in the library for Josephine's article on MUA.
An ideal time to have MUA is when the swelling is well under control. They can do a spinal for this. So if ileus is an issue, is there a reason you couldn't have a spinal? Make sure you have gone over a list of questions with your ortho.
MUA is not a quick fix. It breaks adhesions but it also re-injures the leg. Very often, you are pushed in PT to "keep your gains." Don't fall for it. The gentle approach is the only way to go: range of motion efforts to the point of discomfort but not pain. I used a CPM to increase time spent on range of motion without inflaming my knee. You'll be told they got xx degrees on the table (meaning, under sedation), and there will be a 2+ week backlash of swelling that will severely limit your ROM. Plan on practicing lots of faith then.