Hiya flower gal, I personally wouldn't sleep bubs on a table, even in a snuggle bed. I'd use the port a cot with the snuggle bed inside, or else get one of those portacots with the bassinette attachments.
I didn't think you could adjust the height of portacots to have bubs sleeping beside you side-car style?
Personally, I think Australia has very good safety standards and so I've never had a worry about portacots. It is only when you are using extra bedding (blankets, doonas, pillows, ill-fitting mattresses) that you need to be particularly mindful of safety issues IMO.
Also, are the portacots you've seen that much smaller than regular cots?