I agree 1000/EOD is a lot for someone coming off TRT. Like Cage put it, I would run 1000-1500 for the week for the first 3 weeks. TRT levels are going to clear your system pretty quickly, say 2-3 weeks, 4 weeks at the very most depending on esters you've been using.
If you need estradiol control, tamoxifen would be preferred 20-40 with each shot of HCG, unless you have something else on hand like arimidex, then like piston suggested .5 with each shot should do it. But I don't think you would need high doses from coming off TRT. From TRT your estrogen shouldn't be that elevated, it's your ratio of test to E2 that will be off, and this is where you may need some estradiol control. But I wouldn't think that you would need that much control, just pay attention to moodiness, water retention, etc. Plus, seeing it's been a couple of years on TRT it wouldn't be a bad idea to throw some clomiphene in on the tail end of your PCT either for 3 - 4 weeks.