as said above, you would have to transfer all the data to be rendered to your home pc from work. not bad on a nice fast connection but if you're on a slow connection this would take too long to be useful as of course the rendered file has to be sent back to the office when done.
setting up and using remote desktop itself is very easy and the connecting computer does not have to be powerful at all. it is basically just the monitor/mouse/keyboard for the other pc so low end hardware is fine.
there are A LOT of security risks with using remote desktop however so you will want to go the extra mile in making sure it is protected. such as i always use a 512 bit pki key to access it, connect through a vpn or other encrypted connection and only turn it on when i need it. there are a ton of bots out there looking for RDP machines to exploit and i promise if you turn it on, you will be found by those bots!!
it's not a terrible idea you have so long as you have the speedy internet connection needed to transfer your data back and forth in a reasonable amount of time and understand how to secure that connection.