The 2021 WWDC is scheduled for June 7, and it’s anticipated that a new, larger iMac and an upgraded Mini will be announced. Rumor also has it that they will run on a next generation M2 chip. It might be worth your while to wait. If you are not pleased with any of the new models, the current ones could have price drops.
I’m waiting with bated breath to see if the rumors of a Touchbar free, M2 chip MacBook Pro will come true.