Sounds like you are in a great position financially, congrats on choosing real estate!
A few things I'd keep in mind:
1. The power of leverage is the largest part of wealth building in real estate. You earn appreciation based on the market value of the property, not your equity. At 75% LTV you are making 4x as much as you would by owning the property without a mortgage.
2. Interest rates for primary residence are typically about 1 percentage point lower than conforming investor loans so if you can buy a new primary residence and rent you current one out you will save a lot of money on interest payments.
3. Re-read #1 - consider a cash out refinance on that primary then use that cash to buy more real estate.
Many of our properties are now in "infinite return" on our investment because we refinanced to pull our original investment out so we are making cash flow and appreciation but actually have $0 invested in the houses.
I did the 1-2 houses per year for quite a few years, sold some to reallocate investments at times and found that was about the maximum pace I could handle while working my W2. I encourage you to work on that plan - it will deliver results long term that you will be very happy with.