I just went through a gnar reset and lemme tell ya;
Its a pain.
#1 tip- DONT SETTLE FOR A CRAPPY MAP.
It took me 3 days to find one acceptable and its worth it.
Try to save any hybrids/reg flowers you have cause the new town is very barren. If nook is gonna buy your town, sont sell him your catalog. It makes things easier to decorate your new house and finding certain gracie-themed clothing sucks. Youll be able to order stuff through the kiosk once the t-mart upgrades for the first time.