Flubber is a base coat so no need to apply anything else after you've prepped the nails. You could apply another layer on top of colour, before top coat if you want to (although they do a Flubber top coat as well), but I haven't needed to do this. It will take longer to soak off if that's what you'll be doing though.
I use INK's lamp so can't comment on curing with another lamp, although advice I've heard is to double cure if you are trialling another brand. Flubber is 60 seconds in the INK lamp. ILac is 30 seconds for the first coat and 60 seconds for extra coats. I always cure Rock Top for 60 seconds as well. Good luckk