glad it's all working for you

i was really surprised by the power of the alpine onboard amp, wasn't massively different from when i changed to a 2 channel amp to power my front comps.. saying that, i've now got 3 amps powering the fronts

but none are over a third gain cause my current 3 ways won't take it.
If you find them struggling then turn off the media expander (if yours has this option), i found it emphasised the bass too much which really restricted the volume, and you could (again, if your hu has the option) set the low pass filter abit higher, say 80htz, thats presuming your comps are lower than that, mine used to play down to 55htz.
the sound may seem abit thin with the media expander off, so id just adjust the bass engine (again if you have it) boosting the frequency at around 80htz-100htz and once you get used to it it hould sound pretty dam good.
LOL at the tweeter dilema, mine are still sliding around the dash!