The other option might be to add a decent size capacitor (maybe 4700...15,000uF) on the output of the SMPS to deliver short term current pulses without tripping the protection. I say "might" because some wimpy SMPS's are just so wimpy that they find it difficult to start up into a large capacitive load, so you'd be b******d from the start. However some do have a "soft start" provision that avoids this and such an approach has got me out of a hole once or twice before.