According to the description of the trigger set, the receivers can attach to the flash via hotshoe connection, so you should be fine. You will need two receivers, unless you can set the 430 in slave mode (I’m not so familiar with Canon flashes).
According to the listing for the transmitter it will work with the 430, but the 270 is a bit of a question mark. The 270 doesn't have any ability to receive signals in the same way as the 430 (I use a 430 and a 580 with a speedlite transmitter on occasion so I know how this works) although that does rely on an IR trigger rather than the radio signal that the Cactus uses. It does say the flashes (from the Cactus) can be triggered via the hotshoe connection so it may work, particularly as the 200E has been tested and found to be ok (and with the 200E being dumber than a sackful of hammers...) Bottom line - contact the maker and see what they say. firstname.lastname@example.org