LilliannaG,
I can give you my personal history on how HRT has affected me so far. I am now into my tenth month of HRT, E and Spiro. My doctor initially started me out on low dosage of both, two months ago my dosage was increased, basically doubled, to get my blood levels closer to a normal cis-gender woman. I am not a power lifter like you but am very conscious of taking care of myself. I power walk 3 miles a day, five days a week. When finished with that I do two sets of 35 push ups, and two sets of 45 sit ups. I have not noticed any loss of strength or endurance since starting treatment, and that was a concern of mine prior to starting. I am thinking that as long as you maintain your daily workouts that you should be able to achieve good results without the use of T, but that is just my personal observation.