Sorry meant to reply earlier but just been a hectic day at the workshop.
Geckos may run your motors but you will be limited on speed and may even have problems with hard accelerations as the peak is a lot higher than I would think the Geckos would take so you may get overcurrent trips.
Not sure what speed your motors are but if they are 3000RPM then with the max the Geckos can run you will only get 1600RPM.
If you can settle for that speed then it would be better emailing Gecko just to make sure they think they will be ok.
Another option is the CNC Teknix drives, they are a bit higher on the current but I think they are the same voltage.
Another option would be the Rutex drives, heard a lot of good and also a lot of bad about them but as I have never used them I cant say for sure.
There are also viper drives that may work.
First thing I would say is email Mariss at Gecko and see what he says.
For Breakouts then you have lots of choices, my experience is with the PMDX 122 from
www.pmdx.com and the Acustep from cncbuildingbloacks.com. I use both of these on my mills and lathes and they are both excellent. No experience of others so cant comment.
Hood