A.H.
What you're really doing at this age is just introducing them to the textures and tastes of foods (letting them learn how to handle both). It's usually easier to give solids after regular nursing or a bottle, especially if they are fussy when it's time to eat! If they aren't fussy at mealtimes, you can try giving solids before nursing if that works better for you, but their main source of nutrition will still be breast milk at least until they are a year old, so you probably don't want to skip it unless they just aren't that hungry.
You can try starting Stage 2 foods at this point if they seem ready to move on, or (as we did) you can continue with the Stage 1 foods for a couple months more; it's really more about what works best for you and your babies.
Personally, we only use Stage 1 foods; when they are ready for Stage 2 at around 7-9 months, we just puree or mash our own "baby food" and offer soft, easy to eat table foods instead. That's also partly because our kids always seemed much more interested in what WE had on our plates than what was in that baby food jar! :-D
I guess this was just my long-winded way of saying, "Follow your babies' cues and do what works." ;-)
HTH!
--A.