First pole size

i will be ordering my first pole on april 1.🥂 yyay im soo excited . i decided to go with the xpole xpert chrome. but im just stuck between going with the 45mm or the 40mm.  i went to a studio for about a month then it just became too expensive. so by time i pay for membership i could save that payment for my own pole & do veena lessons. 🙂. i believe they had 50mm but i have small hands and im only 5'2.  some things were super hard to grasp todo. but i learned very quickly. in one month i was already inverting and doing tricks. sometimes it was just uncomfortable cuz my hands are small.  which one would be a good pole to get the 40 or the 45? how much difference does it make? wish i could get both. lol. maybe one day down the line ill have the option. thanks in advance for reading