Depends on experience you want and size of bull. If you want to do a DIY hunt and happy with a 320 - lots of units including unit 100, with a near 100% success. If you want 350 or better, need to consider a guide or spend time and have help and be picky about the units.
Personally, I haven't loved my solo hunts. Just not that fun for me. Glad I have done them, but not my favorite. My guided hunts have been a mixed bag, also not my favorite. What was a better memory, a 305 bull my 8 y.o. daughter called in or a 382 guided bull? Both great memories, but If I could redo one, it would be with my daughter. In fact, I would rather help a buddy on a hunt and help him get a bull, then do a guided hunt or a solo hunt.
So I would ask yourself what you want. If the biggest elk is what you are looking for in this hunt - go guided. Best chance hands down. You only have max points once. Once you decide what you want, you will get better guidance. Good luck and have fun!