Are you planning on running WHDLoad on the A500 with Kick 1.3? It won't work, only on Kick 2.x or higher and you really need Fast RAM also or it won't work very well. Even on a A600 with 2MB Chip and no fast a lot of games do not work.
If you have 1MB in your A500 you can transfer ADFs to it, its tricky but you need to get CrossDOS or other type of FAT12 file system. Then you zip the ADF on the 720k disk, read and unzip it to RAM: then ADF2Disk it to a real disk.
