I would start low and assess from there. You want to get the most out of the lowest dose. I would not worry about long term damage, look this up for your own confirmation, but it has been explained by many people that damage is not a concern and I believe many studies show this with very high dosages. Some people seem to be able to tolerate large dosages of HCG. I've seen guys on here explain how they are using 1000+ IUs a week, year around. 250 IU twice a week might work with you. Maybe even start at 150 IU 2-3 times a week. You may need to add AI to combat the raise in E2.
Many people neglect to realize the degradation of HCG once reconstituted. You should be using the vial up within a month or so and as it starts to get less potent you can use a larger dose. It might help explain why guys say HCG makes them feel great in the beginning, but then it just stops "working" for them. Personally, I've used 5000 and 10000 IU vials, but my doses have been minimal so I don't use it in a short enough time frame. I have just ordered 2000 IU to better suit my dosages. I may start out with 200 IU 2-3 times a week. I'll be pinning on the same days I pin Test twice a week most likely. There have been discussions around the "best" time to pin, the day before your Test shot for example, I don't know the exact explanation off the top of my head, but you can google it to find out more. I would just go with what works best for you.