4 treatment options from my doctor, which one should I start with?

Here is the summary of my situation. I am 63 years man with a history of a chest mass in 2019 found to be a thymic neuroendocrine tumor (atypical carcinoid, 10 x 10 cm) with invasion into the pericardium. I was initially treated with thymectomy, and did well until recently when metastatic Dotatate avid disease was found in the mediastinum, anterior right hilum and extensively in the bones. A CT guided biopsy of an iliac bone lesion was consistent with metastatic, well-differentiated neuroendocrine tumor (WHO grade 2). I have been treated for 5 courses of radiation to the right scapula and the C2 vertebral body through early May 2, 2023.

Unfortunately, I was told that with thymic NETs I am ineligible for the clinical trial study.

My doctor has proposed 4 treatment options for my consideration,
Option 1. To start octreotide injections and repeat a dotatate PET scan in 3 months;
Option 2. Everolimus, this medicine is approved for carcinoid but probably has the most side effects of the options;
Option 3. Chemotherapy with temozolomide and capecitabine which is a standard option for GI carcinoid tumors and can be used for thymic;
Option 4. Lutathera as a standard therapy if my insurance would give a prior authorization.

Any comment or experience about treatments would be greatly appreciated.