Combination of extremely tight muscles, weak muscles, loose SI joins and bi-lateral hip replacements

HI all, first off I'm excited a community like this exists out there. I'm hoping it will help me find some answers. I'm 37 y/o male and have been battling this since I was 18. All my life every doctor, PT, chiro, LMT and everyone else I've seen has had different opinions and approaches and I've yet to find relief. 
I've had both of my hips replaced in the last 12 months due to hip impingements on both sides. Left was December 18 and right was March 19. The doctor said they were two of the most inverted hips that he'd ever seen, meaning the ball was so far turned down inside the socket that he was shocked I made it this long without replacement.
I had a DO tell me that my hips weren't the source of my pain, that my SI joints were so blown out that they weren't stabilizing the middle of my body anymore, and that I would regret having the hip surgeries. So far, he's not wrong.

Basically, everything from my knees to my nipples hurt. My hamstrings, quads, glutes (all sizes), lower back, QL and everything else is super tight and/or weak from years of compensation and use/overuse. I've been in constant PT for over a year now with no real progress on muscle tightness, flexibility and overall pain. My PT says my muscle strength and flexibility are close to normal, yet I struggle to walk up a flight of stairs, more than a few blocks, or chase my kid around the yard for a few minutes. If I choose to overdue it, it's in exchange for increased pain and loss of mobility and functionality for a few days after.

My PCP, who is a DO, adjusts me every 3 weeks, and most times my pelvis/hips are rotated differently and she needs to adjust me in a different manner. She says my sacrum sits about 2-3" higher than typical (belly button level) and my muscles are the tightest she's ever encountered. A former PT related them to steel cables, not just tight ropes. Trigger points galore, and the only thing that gives any level of relief is hands on body work with solid stretching after. 

I'm at my wits end on what to do, as every doctor still has a different opinion, and resolution, that I give a fair chance with no great improvement. My PCP told me this morning that she's unsure if we'll ever get to complete relief and I might need to consider dealing with this type of pain my entire life. Honestly, I can't do anything (sitting, standing, walking) for more than 30 minutes at a time w/o needing rest or to switch it up. I can barely lift my 45 pound daughter or hold her for more than 30 seconds.

I could use any help I could get. Many thanks for any thoughts.