I am 29 years old and have have sacrificed a-lot of free time to be able to save money and invest.

Posts here say CF is sometimes sacrificed for appreciation, while others say go for both simultaneously.

I did consider that cash on hand could be ideal for purchasing power, but the free money seemed too good to pass up.Would your advice be to put purchasing the next property on hold until I am in a more favorable position overall by paying off student loans and saving up additional cash BUT sacrificing the income history? 

@Thomas Petra as far as looking into other areas, 10% caps are tough to get here without sacrificing in area or condition, but it does happen!

Your in growth mode, which means you are sacrificing cashflow to build your portfolio.Nothing wrong with that as long as you're happy with your lifestyle and don't spread yourself too thin.You MUST be careful as there always seems to be another GREAT deal that you don't want to let go.

I have sacrificed my health to persue a career. 

"This, however, was afterwards of use to me, the impression continuing on my mind; so that often, when I was tempted to buy some unnecessary thing, I said to myself, Don’t give too much for the whistle; and I saved my money.As I grew up, came into the world, and observed the actions of men, I thought I met with many, very many, who gave too much for the whistle.When I saw one too ambitious of court favor, sacrificing his time in attendance on levees, his repose, his liberty, his virtue, and perhaps his friends, to attain it, I have said to myself, This man gives too much for his whistle."

My property is a rental so I don't want to spend a "great" deal but I don't want sacrificing quality just because....Thanks

It's all about sacrificing especially in the beginning.

If not then I fail to understand why people invest in those areas at all especially when they may be sacrificing long term appreciation when stable returns can be had in better neighborhoods which might be better real returns.