Thoughts about K/4th grade

Curricula
Math- Math U See Gamma/Delta with Math on the Level (30 min)
Spelling- Simply Spelling (15 min)
LA- ILL with Writing Aids' support (up to 30 min)
Latin- Latina Christiana I with DVDs (up to 30 min)
History- TOG Year 4 with Evaluations and MapAids (up to 30 min daily)
Science- General Science (Inventions, Milestones of Science, etc.) (up to 30 min daily)
Music- instrument lessons (piano) (1 lesson a week and 15 min of practice daily)
Poetry Memorization- cutting down to one poem a month (5-10 min daily)
Time spent total approx. 2-3 hrs.

If ds4 will be at home for K:
ABeCeDarian (only thing I need to buy)
Math on the Level
Handwriting
Galloping the Globe
To be limited to 1-1.5 hour of work each day

So homeschooling can be done with both of them in about 4 hours a day, dd8 will have independent work to do while I work with ds4 (they will be a year older next year) and she can do art, informal logic and other things as she pleases or in her free time. It would be nice if I could teach them simultaneously but I'm not going to hold my breath on that.

I'll probably have to do phonics with ds then do Latin with dd, giving him a play break.
Math together, possibly if not I can do math with ds while dd does her independent reading or piano practice.
Handwriting with ds while dd completes her ILL lesson
Galloping the Globe as a family type activity after dd's history and science work has been completed.

Somehow it seems more manageable but I am just thinking aloud as I type. If I did put ds in public school for K, I would have more uninterrupted time for my college work. With him home, I don't know how I'd get that time. If he did go to school, we could still do Galloping the Globe as a family, with bedtime readings.

I think his maturity level at the end of the year, in June or July will be a major determining factor. Let's be honest, it's also dependent on how I can juggle college, homeschooling and part-time work with just dd8 plus maintaining consistent discipline.

I know I need to do last week's report, I'm only online anymore in the morning. I'll get to it this week, plus this week's report.