time flies.. is that a good thing?

So we're getting done with our homeschool work remarkably easily and quickly.  It is making me wonder if  we're doing enough.  After reading some homeschooling forums and comparing our curriculum with that of others, I do think we are on track.  We're covering all the major subjects, so maybe just that it's only 3 of us it's getting done quickly.  Today I found a nice little Writing workbook (by grade level) that I picked up for Musa.  It will help him sort ideas and practice writing.  I think he could use that enrichment.   What I've gathered from all my reading is that it is an ongoing process.  You're constantly tweaking and looking for the next thing.  That sounds right to me... you do have to keep doing that.  Eventually you learn how each child learns and what specific things they learn best from. 
So, for any homeschoolers out there or for whoever is interested, here is what we are up to:

Musa (4th Grade): Saxon Math 5/4, Learning Language Arts Through Literature Orange Book, GUM Drops Grammar, LLATL Spelling, REAL Science (Life), The History of the World, Vol I, Quran Classes, Islamic Studies, Spectrum Writing Grade 4, Arabic language

Heba (3rd Grade): Saxon Math Grade 3, Learning Language Arts Through Literature Yellow Book, GUM Drops Grammar, LLATL Spelling, REAL Science (Life), The History of the World, Vol I, Quran Classes, Islamic Studies, Arabic language.

Maryam (KG): Saxon Math KG, Horizons (Alpha Omega) Phonics KG, Quran Classes, Arabic language, and lots of library books and nature study.

Finally, we do spend time outside plus in some sporting activities.  The kids are already showing more eagerness in learning things on their own and in playing better together.  Looking forward to a nice fall, insha'Allah.