You and your spouse should first decide on priorities, then draft a timeline.
For example: $200K house in 5 years, saving an additional $10K per year, $150K rental property in 10 years, saving $5K per year (personally, I would investigate likely returns first; rental properties seem like a lot of work...), 15% of income into retirement accounts, etc.
For savings of <5years, safe only
For 5-10 years, maybe a balanced fund
For 10+ years, equity fund(s).