Hello and welcome – the T3/T4 issue is very personal. Some patients report feeling best at a certain point in the range, based on analyzing their own lab results over time.
As for the TSI, that can fluctuate over time, and it’s not well understood exactly why. One study out of Europe (Laurberg et al 2008) found that antibodies were reduced significantly in the first 12-18 months after surgery. But these numbers were averages of everyone in the study, so individual results could vary.
Hopefully, others will chime in with their results after surgery. I went the methimazole route and went hypo* without surgery or RAI.
*edit: hypo set in after 7 years on meds and 1.5 years w/ no meds.