Hi Gardnpondr - Welcome, You might want to start a separate thread to introduce yourself rather than piggybacking on PDX1's thread. More folks are likely to see you that way!
In answer to your question, there are a ton of different schools of thought out there about what is the best way for human beings to eat....and there are doctors and nutritionists and "experts" on all sides of the fence. Ultimately, you have to decide for yourself what works for you.
I'd say, if you've gone from size 22-26 slacks down to a size 16 since October 2016, you're doing the right thing for YOU and need to keep it up....whatever it is! And, from 225 down to 180 is a 45 pound loss!
That's more than just a "few pounds." 45 pounds represents a loss of 20% of your original weight. And, if 150 pounds is your goal weight, you've already lost 60% of your original excess weight! That is terrific. Doctors often tell people that losing just 5 to 10% of their excess weight will result in amazing health benefits so clearly, dropping 60% of it ought to have measurable benefits.
Is your blood pressure still running as high as it was when you were at 225 pounds? I would be surprised if it is. As you lose weight, high blood pressure usually starts to drop closer to normal. Keep monitoring it as you keep losing weight and shedding inches.
You don't need to add extra salt to your meals UNLESS you've been experiencing keto flu and, since you've been on your WOE since October and aren't complaining, I'm guessing you're feeling fine. If you're worried that your blood pressure is too high and that excess sodium may be causing it, try cutting back a little bit on salt. NOTICE I suggested cutting back A LITTLE BIT. You don't want to overdo it and suddenly have low blood pressure. Cut back a little bit and see if your blood pressure drops some. If so, cut back on salt a little bit more until you reach a good stable number. Then, talk to your doctor about slowly getting off the bp meds.
Congrats on your tremendous success thus far and don't worry too much about the fact that there is contradictory advice out there. Do what works for you. If something doesn't work, change to something else. But make changes slowly so that you can figure out, for yourself, what is working for you. That's my "expert" advice.