Hi Kymbom2g,
As far as doing the job yourself you'll need a spray gun and compressor to do the job satisfactorily. Maybe you could tell me where in Adelaide you are as I could possibly help you out if you get stuck.
Silicone is definitely the product that requires to be added to the paint.
As far as transfers are concerned you could contact "willingworker" on this forum as he's the major seller on eBay that reproduces most of the vintage mower decals, he's also a fellow Adelaidean.
Cheers,
BB