Most likely your estradiol really is quite high, but in some cases the estradiol test you used can be fooled by high levels of C-reactive protein and falsely report high estradiol as a result. One way to check is to use a different estradiol test that doesn't have this shortcoming. You seem to be using Quest Diagnostics for your testing. Therefore the test you want is this one
Arimidex (anastrozole) and progesterone are both reasonable treatment options, either singly or used together. I view progesterone as a little safer because it is endogenous. But it's important to monitor hormones and titrate doses with either treatment.
I suggest avoiding oral delivery with progesterone. Results can be less predictable because of significant metabolization into other substances. This leaves injections or transdermal delivery. I've had good luck with both methods, though I prefer the precision of injections. With respect to transdermal products, I particularly like the ones that are simply progesterone in coconut oil. These may not be absorbed quite as well as multi-ingredient creams, but I like the relative purity, and I still had good absorption with scrotal application. You can even buy these products over-the-counter. For example, there's the Progestelle brand available on Amazon. I would start low, with 5-10 mg in a transdermal product. Figure the rate of absorption may be about 10%. I would target midrange serum levels for starters, around 0.75 ng/mL.
Progesterone helps reduce estrogenic activity by at least two mechanisms. It's a mild aromatase inhibitor, which can slow production of estradiol, leading to lower levels. In addition, progesterone downregulates estrogen receptors. This means there are fewer receptors and therefore less overall responsiveness to estrogens such as estradiol. Progesterone may help with your sleep. In my case starting supplementation increased quality sleep by about an hour each night. Expect a positive effect on mood, especially in the beginning. The improvements may tempt you to dose higher, but try to avoid this. Higher levels can degrade memory and mental sharpness, and also cause other problems.
I would try progesterone alone for a few months. Only if you're still having problems clearly linked to estrogen would I then proceed to use anastrozole in addition. Anastrozole is quite strong, so it is wise to micro-dose from the start, and increase slowly and only if clearly needed. Reasonable starting doses are around 0.25-0.5 mg per week. It's tricky to split a 1 mg tablet appropriately, but you can dissolve a tablet in 10 mL of vodka and dose by volume. I've used this technique to take as little as 0.025 mg (25 micrograms) of anastrozole daily. You're looking for the smallest dose that gives you reasonable results. In addition to total estradiol, you need to monitor the ratio of estradiol to testosterone. The normal range for this is about 0.3-0.6%. You don't want to stray much from this if possible. Your current ratio is 1.2%. You knew that the absolute level of estradiol is high, but this shows that estradiol is unusually high relative to testosterone as well.