I'm a tongue-thruster (yup, still) myself and had no trouble going to solids when I was ready. :)
You might look into baby-led solids/baby-led weaning (it's not really weaning so I don't know why some call it that). http://babyledweaning.blogware.com/
http://www.tribalbaby.org/babyLedEating.html
Any chance she's waking for other reasons? Developmental stuff, maybe? I am astounded that she's been sleeping 6-8 hours at a stretch to begin with! Personally, I wouldn't do the cereal in the bottle. From what I've read, there's no evidence that it actually works. You might try to see if you can add in a daytime feed or two. If she eats more during the day she'll be less hungry at night.
Sleep issues aside, there's no reason to worry that she's not eating solids yet. Our pediatrician said there's a developmental window that closes after 10 months, were a child who is still not on solids might start having sensory issues about food. We started our 2nd son late on solids (right around 10 months) because he has a lot of food intolerances and we were struggling with figuring out which foods in MY diet were affecting him in which ways...we sure didn't want to throw solids into the mix! He's now 20 months and doing great and doesn't seem to have any textural aversions. (Still doesn't like green veggies, but wolfs down the orange/yellow ones!) Still doesn't go 6-8 hours at night w/o nursing, though. ;)
Best of luck!