You should be getting jack stands if you want to be safe than sorry. And if you want to make your wheels comes off smoothly (especially alloys) next year you need a bottle of anti-cease. Also a tire crayon to mark up which wheel is which will help with rotating your wheels.
Finally, are you use to physical labour? Even as someone who's in pretty good shape the job especially when I use to do 2 cars and moving essentially 16 wheels (wife's are ginormous) up and down stairs to and from basement storage (a major motivation to build a shed), was exhausting. So now I do my own and we pay our 3rd party garage a few bucks to do her's since again her wheels are crazy heavy and big, not worth the cost of say a back injury.