I was actually thinking if this was possible! Do you just mix a sugar and yeast solution in a plastic coke bottle and have a carbonation cap linked to the keg via disconnects and hosing?For 2.3 volumes and a beer that was kegged at 20c you need 54g for carbing then another 86 for serving - so around 3 of those bulbs to force carb.
You'll lose some beer to gunk if you prime with sugar. I've no idea how much those bulbs are so you'll have to work out if losing beer and adding extra conditioning time is worth it.
I wrote one in Excel. If you want I'll tidy it up and put it in its own sheet and put it on google docs. It even tells you how much sugar to use if you want to force carb using a 'sugar engine' which is basically a pop bottle linked via a hose to the keg.
You get to force carb with sugar and not lose any of the beer to sediment and it works very, very well.