IMO In general, Be very careful with FUE. I am talking from a lot of first hand experience. If you have courser, wavy, higher caliber hair,it may be easier to extract and pull out the graft bulb so FUE may not be detrimental. If you have straighter medium to thinner caliber hair, IMO, FUT may be better option. It also depends on your ethnicity, asians and indian folks in general probably are better off with FUT. Also, evaluate a surgeons surgical protocol. Who will donor extractions and surgical aspects? What tools do they use? How long they used that particular tool? Manual FUE may be a safer option and if you need over 2000 grafts via FUE, consider separating procedure into multiple days to increase probability of graft survival and yield. Do not pay any deposit until all your questions are answered via email and in writing. Be very careful on what route you take, you do not want to become a patient that needs repairs to repair repairs and more. A good resource to talk to is a hairloss mentor and definitely consider reaching out to real unbiased patients for reviews or if they want to meet in person.
Scalp biopsy may or may not be conclusive when the results come back. It requires stitches and can cause shockloss in area they take the sample. I know some folks that had it and if you have strong symptoms of LPP it is something you can consider. There are risks with the biopsy and it is done by a dermatologist and it isnt cheap. Not sure if insurance covers it but it can cost like around $1000 bucks from what I heard.
Be careful though and weigh the pros and cons of the procedures. I really am passionate about helping folks and know how things can be if you end up not where you want to be.
Do not believe anyone that tells you FUT yield matches FUE yield. No one can put a number on how much yield they can achieve for FUE. Do not believe the hype or be decieved by some clinic posted results by some clinics. Be safe and stay safe. Wish you the best with whatever you decide. See if you can talk to Joe Tillman regarding FUE and see what is the best approach.