Help with 6 year plan to retirement

Hello all, I’m an E-7 with roughly 6 years to retirement. I’ve finally become debt free and I wanted to ask for help planning out my future finances.

• Current status:

Take home income: ~$5500 a month combined between me and spouse after taxes, TSP, etc.

TSP: 30K (C&S) at 15%, no matching (High-3)

Emergency Fund: 25K in HYSA

Brokerage: 5K in VTSAX

Debt: No CC debt, no car payments

Housing: on base housing

• Future saving goals:

• House down payment (plan to retire in spouse’s home country, VA loan won’t apply but estimated house cost will be $300K based on local market research)

• School Tuition (undetermined cost, will depend on which country my children decide to go to school to)

• Country moving costs (purchasing cars, furniture, tickets to visit family in America, etc)

Barring an unimaginable life emergency, we can save ~$2.5-3k a month for the remaining six years after covering all monthly expenses (groceries, insurance, pets, gas, trips, etc). Also subject to change with promotions, biannual raises by keeping expenses the same.

So basically I’m looking for a savings plan to invest that money in the most appropriate way. Currently I plan on a combination of VTSAX and a CD ladder but please give me some advice as I’m not sure this is the best way to go about it.