I put roughly 20% down on a $200k home, and am curious what steps I could take to possibly turn my original investment into a large portfolio within the next 10 years, when we're currently "low on liquid funds" after finishing up a wedding.... 

That was not always possible, especially with HELOC seconds, but it also was not uncommon.To Your Success!

There were many challenges that came about after the inspection; from outlets that were not up to code, possible water leaks above the shower head in the ceiling, water pipes from bathroom vanity was the same as kitchen sink with no shutoffs, etc.

Also possibly passively invest if I could find a good deal. 

Possibly.

Quote from @Micah Huffman: I am considering relocating to Nashville for a job promotion that would be a 20% increase in pay possibly more.

Is it possible to avoid taxes on the gains if I buy another property for $564k ($900k - $336k) and make capital investments of $336k?

Are they doing everything possible to expose properties to the broadest possible market?

It's possible that they may only allow 10% of the overall assets to be redeemed at any regular interval. 

Buy box: Location: Approx. 30 min drive to Boston Heights, for workNeighborhoods: Decent walkability score - not far from shops/restaurants/trendy neighborhoodsIdeal tenants: Close to hospitals/universities/schools for professionals/students/familiesBudget: $175-250K - Buying w/conventional loan, 5% down/ approx 20K reno.Property type: MFH 2-4 units - preferably side-by-side, with a yard we can fence for our dogUnits: 3+/1+ - better if 1.5/2 bath per unitTimeline: Plan to live there for 2 years, but possibly only 1 year if we find another investment opportunityGoal: Focus on appreciation - would like to see cash flow in year 2-3 (the year we move out), including overhead (Vacancies, Maintenance, Utilities) and budgeting in PM if eventually we don't manage ourselvesValue add: Opportunity for some forced appreciation, but not a full reno - cosmetic upgrades and updating kitchens/baths while we live in one unit.