Jeeh, trying to give (sens.) advise via sec wording things here..
Well, whichever you choose to do.. please mind your back.. and carry the weight/lifting stuff with the strength of your legs mostly.
You could.. lifting one corner of mentioned furniture only slightly off the floor/just enough to fiddle the skateboard under that corner and if that seems okay.. in short lifts, lift the opposite corner.. putting most of the weight of the item on the skateboard. Um, dunno.. but if you decide to do it yourself.. take slow, doable little 'steps' towards where you want the furniture to go.
Or ask for help.. 'cause ja, two make a heavy job quite a tadski lighter.