I would make precisely zero plans based on what the Republicans might do with health care.
Plan on ACA. If ACA goes away, replan.
When I did this, I started with seattlecyclone's blog post:
https://seattlecyclone.com/optimizing-the-affordable-care-act/The ACA is confusing when you first start looking at it. I understand your frustration. Read that post once... then go to healthcare.gov and play with the real numbers in your zip code. THEN go back and read SC's blog again. (I think I read it 3 times with some playing around with numbers/plans in between before it clicked... and I still find things I don't know when I go back.)
The one thing I found particularly frustrating with the ACA (and probably any plan after it) is the variability based on location. The first full year we were healthcare.gov plans there was one and only one provider in our geographic area. The plans were relatively inexpensive (after subsidy) but... the doctors available were few and not the ones I wanted. In 2017 a new insurance provider moved in and made really big changes for us: MUCH cheaper plans (though not HSA compatible) and MUCH more desirable physicians on the plans. Your mileage WILL vary.... that's just the nature of it.